Hernandez brings down McTominay on the charge and goes into the book.
McTominay's run earns a free-kick as he draws the foul from Hernandez in the Milan half. United should be able to run down the clock from this point.
90' +4
Calhanoglu angles a cross into a dangerous area, but Lindelof steers it away from Kjaer before Kessie touches the ball behind. That could be it for Milan.
90' +3
L. Shaw gets yellow.
Shaw goes into the book for the visitors as he brings down Saelemaekers.
90' +2
Henderson makes an important sliding challenge at the back to stop Saelemaekers latching on to Calhanoglu's offload. He then scampers off his line once more to gather a ball over the top ahead of Ibrahimovic.
90'
There will be five minutes of added time.
89'
WIDE! Fernandes tries to pick his spot with a low strike at goal, but the ball deflects off the heel of Kessie and travels wide. The corner is not a bad outcome for United considering the time left.
87'
James puts in another good run and he draws a foul from Kessie that will allow United to take vital time off the clock.
85'
S. Kjær gets yellow.
Kjaer takes down Fred on the charge and goes into the book.
McTominay has to stretch at the back to divert Diaz's dangerous pass in the left inside channel away from Hernandez and into the arms of Henderson.
84'
James makes an incisive break into the right inside channel before offloading to the flank for Wan-Bissaka. He drills a low cross into the middle, but Donnarumma holds it amid the presence of Greenwood.
Minute
Description
83'
United are trying to take the pace out of the game. It has been a perfect away performance from Solskjaer's men, who have been so good on their travels this season.
81'
Tomori launches a long ball forward for Ibrahimovic to attack, but the Swede moves a fraction too soon and is caught offside.
80'
Milan are upping the ante on the United goal, but the visitors are holding firm for now.
78'
Hernandez surges down the left flank and past the challenge of Wan-Bissaka. He tries to pick out Calhanoglu at the back post, but Shaw makes the vital interception.
Fernandes goes for goal from distance, only to curl his effort straight at Donnarumma.
77'
Diogo Dalot gets yellow.
Pogba makes a burst at the Milan defence and he keeps churning despite being fouled from behind by Dalot. He eventually goes down on the edge of the box, but the free-kick is awarded 25 yards from goal for the initial challenge.
Dalot is booked for his persistent fouling of Pogba.
75'
Diaz lifts a cross into the box for Ibrahimovic to attack, but on this occasion the forward is offside.
72'
Brahim Díaz enters the game and replaces R. Krunić.
Krunic makes way for the home side and is replaced by Diaz.
69'
BLOCK! Kessie sends Calhanoglu down the right flank and collects his cutback into the box. The Ivorian goes for a first-time strike, but the Swede blocks his effort at the near post. Lindelof had to make that intervention.
67'
Milan need to force the issue now and give Ibrahimovic a chance to get his team back into the game. The forward may only need one.
65'
P. Kalulu gets yellow.
Diogo Dalot enters the game and replaces P. Kalulu.
Z. Ibrahimović enters the game and replaces Samu Castillejo.
Kalulu makes way for Dalot down the right flank. Will the United loanee haunt his parent club?
Ibrahimovic makes his way on to the field against his former club. The Swede returns in place of Castillejo.
Kalulu pulls back Shaw and goes into the book.
63'
Ibrahimovic is readying himself to enter the action. The Italian outfit need a goal to get back into the tie.
61'
Meite pulls back Fernandes in the United half and is fortunate to avoid a booking.
59'
Maguire and Kjaer tangle for the ball in the air from the resulting corner, but the United defender gives away a free-kick.
58'
United win a free-kick on the left flank that Fernandes angles dangerously towards goal, but Kjaer deflects it over the bar.
56'
Pogba spots Donnarumma off his line and lines up an ambitious strike from the halfway line, only to send his effort well wide of the target.
54'
Maguire takes one for the team for the visitors as Calhanoglu drills his cross straight into the face of the United skipper.
48'
P. Pogba has scored a goal for Manchester United!
GOALLLLLLLLLLLLLLL!!! POGBA MAKES A DECISIVE IMPACT!!!! 1-0 UNITED!!!! Pogba comes off the bench and puts United ahead on the night and in the tie. Milan are unable to clear their lines from a strike from James that causes havoc in the box. Fred holds his composure to roll the ball to the Frenchman. There's still work to do for Pogba, but from a tight angle he lifts his effort past Donnarumma. A vital strike for the Red Devils.
46'
P. Pogba enters the game and replaces M. Rashford.
Rashford is forced off at the break and is replaced by Pogba. Greenwood will spearhead the United attack.
We're back under way at San Siro.
45'
HALF-TIME: MILAN 0-0 MANCHESTER UNITED
44'
Hernandez is played into space down the left and he cuts inside to shoot on his left foot, but Wan-Bissaka blocks his effort.
42'
United have been too passive in their approach in the first half. They need to get a foothold in the game to put Milan under pressure.
39'
The game has lost impetus since the early stages of the contest, which will suit the home side.
37'
Calhanoglu angles a deep cross to the back post from a free-kick on the right flank. Kjaer meets it and directs a header across goal, but Maguire is on hand to clear with a header of his own.
34'
Castillejo pounces on a mistake by Wan-Bissaka and he breaks to the edge of the box. He offloads to Kessie in the left inside channel, but Lindelof slides in with a perfect challenge to thwart the Ivorian.
33'
Milan win a corner down the right flank and the cross from Saelemaekers almost falls for Kjaer in the box. Henderson has to scramble off his line to smother it in front of the defender.
31'
The visitors need to discover their clinical edge in the final third. Some of their approach play has been pleasing on the eye, but they are lacking a quality ball into the box.
29'
United win a corner down the right flank that Shaw angles into the box. Maguire rises with Kjaer, but the Dane deflects his header off the United defender and out for a goal-kick.
27'
James continues to thrive down the right flank and he opens up room for a cross. However, Donnarumma comes off his line to claim his delivery with ease.
25'
Fred has space in the Milan half and has Rashford in support. The Brazilian goes alone, but he sends his effort straight at Donnarumma.
23'
Hernandez surges forward through the United midfield and towards the edge of the box. He gets an element of fortune to get the better of Wan-Bissaka, forcing Maguire to intervene to concede a corner to stop the Frenchman.
21'
United have space on the break and James has room to raid forward. He has a two-on-one situation in his favour against Tomori, but he tries to go alone instead of offloading to Rashford. The Welshman loses out under pressure to the Milan defender.
20'
Rashford has a charge at the Milan defence, but Kessie watches him all the way and gets back to block his attempted strike.
19'
Fernandes drills the corner towards the near post, but Donnarumma punches clear of danger with firm fists.
18'
Shaw latches on to a ball over the top down the left flank from Maguire. Kalulu tracks his run all the way and diverts his cross behind for a corner.
17'
The pace of the game has not been brisk by any means. Both sides have been fairly methodical in their build-up.
12'
James surges past Hernandez on the right flank and goes for the cutback into the middle. Kjaer reads the danger and clears with authority.
10'
Fernandes collects on the right flank and he angles a cross deep to the back post, but he overhits his delivery out for a goal-kick.
8'
The home side are struggling to settle into a rhythm this evening. The Rossoneri have not been able to get their foot on the ball for a period of time.
6'
United are getting their foot on the ball early in the contest and are taking the game to the home side.
4'
Castillejo battles Lindelof for a long ball played over the top, but the Swede goes down and the referee awards a free-kick to United.
2'
Greenwood has a burst down the right flank and launches a dangerous ball across the face of goal. However, Rashford slips at the back post before he can make contact.
1'
We're under way at San Siro.
James surges down the right flank and sends a low cross into the box, but Tomori is alert to clear the danger.
Good evening and welcome to the live commentary of the second leg Europa League round-of-16 contest between Milan and Manchester United at San Siro.
MILAN (4-2-3-1): Gianluigi Donnarumma; Pierre Kalulu, Simon Kjaer, Fikayo Tomori, Theo Hernandez; Soualiho Meite, Franck Kessie; Samu Castillejo, Hakan Calhanoglu, Rade Krunic; Alexis Saelemaekers.
MILAN SUBS: Ciprian Tatarusanu, Ivan Bennacer, Diogo Dalot, Sandro Tonali, Zlatan Ibrahimovic, Brahim Diaz, Riccardo Tonin, Matteo Gabbia, Antonio Donnarumma.
MANCHESTER UNITED (4-2-3-1): Dean Henderson; Aaron Wan-Bissaka, Victor Lindelof, Harry Maguire, Luke Shaw; Scott McTominay, Fred; Mason Greenwood, Bruno Fernandes, Daniel James; Marcus Rashford.
MANCHESTER UNITED SUBS: Dean Henderson, Paul Pogba, Lee Grant, Amad Diallo, Alex Telles, Nemanja Matic, Brandon Williams, Donny van de Beek, Axel Tuanzebe.
Simon Kjaer's stoppage-time header handed Milan a vital away goal in the contest last week, putting Stefano Pioli's men in a healthy position. The Rossoneri deserved a draw out of the first leg and will have confidence in their ability to progress to the quarter-finals. Milan's Serie A title hopes took a major blow last time out against Napoli, losing 1-0 on home soil. Pioli has to ensure that his team are focused otherwise it could turn out to be a bad five days for the club.
Manchester United secured a 1-0 win over West Ham after conceding their late goal against Milan last week. Ole Gunnar Solskjaer picked his team up from their late disappointment to continue their push for second place in the Premier League. The Red Devils need to score tonight to keep their Europa League hopes alive and will have to be at their best to overcome the Rossoneri on the road.
Henderson has been called on to deny Alexis Saelemaekers and Franck Kessie, while Rade Krunic put a late effort just wide of the left post. United have been too quiet in the final third, with only one effort on target. That needs to change otherwise they're heading out.
Milan have to turn the page following their defeat as they take on Fiorentina in Serie A on the road on Sunday. Manchester United are also in action on Sunday against Leicester City in the quarter-finals of the FA Cup at the King Power Stadium.
Thanks for joining our commentary this evening. Until next time, goodbye.
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