Paul Pogba scored the winner on his Manchester United return as they edged past AC Milan at San Siro to reach the Europa League quarter-finals.
The France midfielder settled the tie three minutes after his introduction as a half-time substitute with a composed finish from close range.
The 28-year-old was making his first appearance in the competition this season, after coming back from a thigh injury which has kept him out since 6 February.
Until his intervention, Ole Gunnar Solskjaer’s side had rarely looked like breaking the deadlock against a well-organised Milan team who also appeared capable of adding to the late away goal that had swung the tie in their favour at Old Trafford.
Rade Krunic, Alexis Saelemaekers and Theo Hernandez all threatened the visitors’ goal before the break.
Zlatan Ibrahimovic was summoned from the bench to try and rescue the tie, but United goalkeeper Dean Henderson superbly saved to prevent the Swede from scoring with a back-post header.
Henderson, who was excellent throughout, also brilliantly turned away an earlier effort from Saelemaekers.
United join fellow English side Arsenal in the draw for the quarter and semi-finals on Friday at 12:00 GMT.