In the return leg of Europa League's marquee round-of-16 matchup, Manchester United must go to the San Siro having seen its advantage slip away in stoppage time at Old Trafford.
In the first leg last week, 18-year-old Amad Diallo put the Red Devils ahead in the 60th minute with his first goal for the club. But Manchester United may look back and regret the final moments of the match when AC Milan defender Simon Kjær took advantage of a defensive lapse off a corner in the 92nd minute to give the Italian side a critical away goal.