United will pass the ball around at the back to take the time off the clock before their inevitable win.
90'
R. Lukaku has scored a goal for Manchester United! Assist by A. Martial.
GOALLLLL!!!! LUKAKU SEALS THE TIE! United break on the counter and the Belgian plays a one-two with Martial before firing his effort through Carson into the net. Clinical from the home side.
Martial threads his pass through to Lukaku, who does the rest with a close-range finish.
There will be three minutes of added time.
89'
Olsson whips a dangerous ball into the box, but no white shirt can fire an effort at goal before Smalling clears the danger.
87'
Huddlestone goes for a drive from distance and the ball flicks the leg of Blind before heading behind. However, the referee awards a goal-kick to the home side - a poor decision.
86'
Derby try to play their way through United at the back, but Herrera makes an important interception to quell the attack.
84'
J. Lingard has scored a goal for Manchester United! Assist by R. Lukaku.
Lukaku lays the ball into the path of Lingard, who does the rest with a sublime finish.
GOALLLLLLLLL!!!!!! LINGARD SCORES A STUNNER! United's form man breaks the deadlock with a rasping strike from the edge of the box. He latches on to Lukaku's pass before flicking the ball up to strike on the volley, firing his effort into the top corner beyond the reach of Carson. A brilliant effort from the England man.
82'
Derby win a free-kick down the left and Thorne whips the ball into the box, but Fellaini is there to clear the danger.
81'
M. Bennett enters the game and replaces T. Lawrence.
Lawrence is replaces by Bennett for the visitors.
80'
M. Fellaini enters the game and replaces M. Rashford.
It has not been Rashford's night as he makes way for Fellaini.
Minute
Description
78'
J. Hanson enters the game and replaces J. Russell.
Hanson replaces Russell for the visitors.
It's like the Alamo at the back for Derby at the moment. They're hanging on by a thread here.
77'
SAVE! Lingard surges through the Derby defensive line and fires at goal, only to be denied by Carson. Pogba latches on to the rebound on the edge of the box but scuffs his effort wide of the target.
76'
Martial runs at Wisdom down the flank and he lifts a cross to the back post. Lukaku rises and heads off the post, although the offside flag was up anyway against the Belgian.
75'
Martial makes a neat turn in the box, but before he can strike Keogh and Pearce convert to crowd him out and win back possession.
73'
Russell tracks back well to make a good covering tackle on Lingard before he could threaten on the edge of the box.
71'
OFF THE POST! RASHFORD STRIKES THE WOODWORK AGAIN! Neat interplay between Herrera and Lingard opens up room for Rashford to strike at goal in the right inside channel. He fires his effort across Carson towards the bottom corner, but he sees his strike clatter off the inside of the post and bounce to safety. His and United's frustrating night continues.
70'
SAVE! Rashford switches flanks from left to right. He drifts in from the wing and hammers an effort at goal on his left foot, only to be denied by a solid stop from Carson.
69'
CLOSE! Pogba goes for a first-time strike from the edge of the box and he catches Carson unawares, only to see his effort trickle past the post.
67'
M. Vydra enters the game and replaces S. Winnall.
A. Martial enters the game and replaces Mata.
Winnall makes way for Vydra.
Martial replaces Mata for the home side.
66'
Lingard creates room in the box to strike at goal, only to lift his effort well over the top.
64'
Herrera makes a run into the left inside channel to collect Rashford's pass. However, his cutback towards Lukaku is intercepted by Keogh and cleared by the visitors.
62'
Rashford continues to struggle tonight as he curls his delivery from the left flank straight into the hands of Carson.
61'
Pogba runs out of options in the final third so he goes for the strike from distance, forcing a solid stop out of Carson.
60'
BLOCK! Blind has to act at the back to divert Wisdom's effort in the box behind for a corner after the defender linked up with Keogh in the box.
59'
SAVE! Lawrence drives into space in the final third and shoots from 25 yards, only to be denied by a good save from Romero turning the ball past the post.
58'
Rashford wastes the opening as he fires his effort straight into the one-man wall and Derby are able to clear the danger.
56'
Wisdom brings down Rashford on the byline on the left flank after the forward stretched to keep the ball in play. The forward will send the resulting free-kick into the box.
54'
OVER! United win a corner and Lukaku rises highest in the box, but he can only guide his header from Rashford's delivery over the bar.
53'
SAVE & WIDE! Mata is teed up on the edge of the box by Pogba, but Carson makes a good save to stop the strike. United gather the rebound and Lukaku sees his shot blocked before Pogba collects. The Frenchman goes for the shot on his left foot, but his effort drifts past the post.
52'
The Championship side have enjoyed a bright start to the second half and are putting United under pressure to respond.
50'
CLOSE! Lawrence's delivery is cleared as far as Huddlestone on the edge of the box. The midfielder powers a shot towards the target, but Shaw makes a good block with his head, only for the ball to travel narrowly past the post. Shaw had to make that block.
49'
Lawrence raids down the right flank and gets brought down by a shove in the back from Shaw. The winger will lift the ball into the box.
47'
Derby try to force the issue down the right and a mistake from Rashford almost allows Lawrence room to cross into the box before Shaw clears.
46'
R. Lukaku enters the game and replaces H. Mkhitaryan.
Mkhitaryan makes way for Lukaku.
We're back underway at Old Trafford.
45'
The referee ends the first half.
Olsson drifts into another promising position down the left and he sends a cross into the box. Winnall tries to latch on to the ball and Romero spots the danger. The Argentine could catch it, but he punches away. Fortunately for him and United, Derby cannot capitalise.
44'
Olsson breaks down the left and he opts to go for goal from distance, only to hammer his effort over the bar.
42'
BRILLIANT SAVE! Carson makes a great stop to keep the scores level. Pogba whips his free-kick over the wall and towards the top corner, but the Derby keeper gets across to his right to turn the ball over the bar.
41'
Lawrence takes down Pogba 25 yards from goal and United have a free-kick in a promising position. The Frenchman stands over the ball.
39'
Shaw tries to force the issue with a ball through the Derby defence, but he sends his pass behind for a goal-kick. Frustration for the home side.
38'
SAVE! Rashford is handed another opening in front of goal as he latches on to Herrera's cross from the left, but he heads straight at Carson.
37'
United probe down the left flank as Mkhitaryan lifts the ball over the top for Shaw in the inside channel. However, Keogh comes across to make the vital interception.
35'
OFF THE POST! A mistake by Wisdom hands United a corner. The home side play the ball short and Mkhitaryan lifts a dangerous cross to the back post. Rashford is unmarked as he guides his header towards the net, only to be denied by the post. The forward should have put that one away.
33'
Pogba looks for Lingard down the left inside channel, but he overhits his pass and it allows Keogh to guide the ball out for a goal-kick.
32'
The Rams have worked their way into the game nicely and have taken United out of their early rhythm.
30'
OVER! Lawrence goes for goal but he gets his effort all wrong, blasting the ball over the bar.
29'
Herrera trips Winnall on the right edge of the box and the visitors are awarded a free-kick in a dangerous position.
27'
WIDE! Weimann and Winnall combine on the edge of the box to allow the latter to strike at goal, but he pulls his effort wide of the post.
25'
Derby continue to edge their way into the contest, but Wisdom wastes an opportunity to send a threatening delivery into the box, firing the ball out for a goal-kick.
23'
Pearce rises highest in the area from the resulting corner from the boot of Lawrence, but he fails to direct his effort on target, nodding over the bar.
22'
CLOSE! Derby come within inches of the lead as Russell lifts a cross into the box. Olsson continues a run from the back to break into the area and he loops a header towards goal, only to be denied by the fingertips of Romero.
21'
SAVE! Mata curls his effort over the wall towards the top corner, but Carson makes a fine save to turn the ball past the post.
20'
Mata surges to the edge of the box and goes down under a challenge with Pearce. The referee awards a free-kick in an extremely dangerous position.
19'
OVER! Rashford breaks forward and weaves his way past two challenges on the edge of the box before pulling the trigger, only to fire his effort over the bar.
17'
WIDE! Rashford goes for power in an effort from distance after dropping deep to collect the ball. However, Carson watches his effort travel harmlessly past the post.
16'
Lawrence makes a good run into the final third and has the United defence on the back foot. He offloads to Winnall in the left inside channel, but the forward loses out in his challenge with Smalling again.
14'
Winnall drives forward through the middle of the United line, but his progress is halted before he can strike at goal by Smalling.
13'
Mkhitaryan's distribution is at fault again down the right as he overhits his pass to Lindelof out for a goal-kick.
12'
Mkhitaryan collects down the right and he drives to the byline, but he fires his cross over the heads of everyone on the box.
10'
Derby probe on the edge of the United box with Winnall, but he opts not to strike at goal and gets crowded out before his side can seriously threaten.
9'
WIDE! Mata creates room to tee up Pogba for a strike on the edge of the box. The Frenchman goes for the effort on his left foot, but he places his shot just past the post.
8'
Mkhitaryan sprays the ball outside to Lindelof on the right flank. The defender fires a first-time ball across the face of goal, but Rashford is on his heels in the box and it trickles out for a goal-kick.
7'
Rashford whips a delivery into the box and Herrera of all people is not picked up by the Rams' defence. However, the Spaniard can only guide his headed effort wide of the post.
5'
SAVE! Space opens up for Pogba to strike at goal from distance, but the Frenchman can only drive his effort straight at Carson.
3'
OVER! Pogba raids down the left and he slides the ball across to Lingard in the box, but he blasts his effort over the bar.
2'
United are straight on the front foot and are pushing Derby back towards the edge of their own box.
1'
We're underway at Old Trafford.
Good evening and welcome to the live commentary of the FA Cup third round clash between Manchester United and Derby County at Old Trafford.
United recorded a 2-0 win over Everton last time out to end a four-match run without a win in all competitions. A little bit of pressure was beginning to grow on Jose Mourinho due to the club's defeat in the League Cup to Bristol City along with the gap at the top to their bitter rivals Manchester City. However, the Portuguese has reiterated his commitment to the Red Devils and his team responded with a second-half salvo at Goodison Park.
The Red Devils now turn their attention to the FA Cup - a competition that they have won only once in the last 14 years. Louis van Gaal lifted the trophy for United in the 2015/16 season and with the Premier League seemingly out of sight along with their defeat in the League Cup, it will behove Mourinho to have his team fired up for a lengthy run.
Derby are on a great run of form in the Championship, which has seen them rise into second place in the table behind Wolves. The Rams are unbeaten in their last seven matches, although they were forced to settle for a draw last time out against Sheffield United. Gary Rowett will have his team ready for the challenge this evening - desperate to emulate the performance of Bristol City.
The team news has been announced and we'll start with the home side.
MANCHESTER UNITED (4-2-3-1): Romero; Lindelof, Smalling, Blind, Shaw; Herrera, Pogba; Mata, Lingard, Mkhitaryan; Rashford.
United subs: Rojo, Lukaku, Martial, Fellaini, Darmian, McTominay, Pereira.
United have made five changes from their win over Everton. Sergio Romero comes into the side between the sticks, while Chris Smalling, Daley Blind, Henrikh Mkhitaryan and Marcus Rashford also come into the side.
Derby have made six changes from their draw against Sheffield United last time out. Andre Wisdom, Alex Pearce, Marcus Olsson, George Thorne, Tom Lawrence and Sam Winnall are all recalled to face the Red Devils.
STAT ATTACK! This will be the 10th time these two sides have been drawn together in the FA Cup, meeting as recently as January 2016 – with Man Utd winning 3-1 at the iPro Stadium in the fourth round thanks to goals from Wayne Rooney, Juan Mata and Blind.
STAT ATTACK! The last meeting between the two sides at Old Trafford came in the semi-finals of the League Cup in the 2008/09 season. United trailed 1-0 from the first leg, but won the contest 4-2 on the night as Nani, John O'Shea, Carlos Tevez and Cristiano Ronaldo fired them to the win, despite a brace from Giles Barnes.
The players are out on the pitch, so we should be underway shortly.
HALF-TIME: MANCHESTER UNITED 0-0 DERBY
It's all square heading into the break between Manchester United and Derby. United should be ahead, with the home side wasting several opportunities in front of goal. Marcus Rashford hit the post from close range, while Paul Pogba and Juan Mata have both been denied from free-kicks by Scott Carson. Derby have had moments on the counter, including Marcus Olsson's header that forced Sergio Romero into a good save. Jose Mourinho will want to see a greater clinical edge from his side in the second period.
A change is coming at the break for United.
FULL-TIME: MANCHESTER UNITED 2-0 DERBY
Thanks for joining our commentary this evening. Until next time, goodbye.
Manchester United are through to the fourth round of the FA Cup with their win over Derby. It was looking like one of those days for the Red Devils before Jesse Lingard broke the deadlock with a stunning effort from the edge of the box. Romelu Lukaku then wrapped up the victory with a close-range finish to add gloss to the performance. Derby had their moments, but when United upped the ante they were unable to compete.
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