Norwich City Under-21s fell to a 5-3 defeat at Carrow Road against Manchester United in Premier League 2.
The Canaries were ahead after only six minutes as Errol Mundle-Smith scored his fourth goal in seven days. Brandon Forbes was played through and delivered a perfect ball for the Norwich striker to open the scoring.
However, Manchester United would find an equaliser as Ethan Williams' deflected effort managed to wrong-foot Caleb Ansen.
Finley Welch came closest to restoring the Norwich lead in the first-half, ducking and weaving beyond a couple of defenders before seeing an effort saved by the feet of Hubert Graczyk.
Ansen was called into action, denying attempts from both Jayden Kamason and Williams.
Manchester United made a fast start to the second half with two goals in as many minutes to take control of the game. Dan Gore put them in front, before Ethan Wheatley extended the lead.
It was four for the away side as Wheatley added his second goal of the game.
Norwich went in search of a route back into the game and almost found one as Dan Ogwuru's saved header led to a scramble in the area with a number of shots blocked before the away side eventually cleared their lines.
And they'd find a goal with three minutes left of play as Lucien Mahovo's cross into the box was met at the back post by Ogwuru to score.
There would be another Norwich goal late on, adding their third as Welch curled brilliantly into far corner.
But Manchester United secured it in the ninth minute of stoppage time. With Ansen up for a corner, the away side countered and Wheatley completed his hat-trick.
The Under-21s travel away to Reading on Monday, October 7, in their next PL2 fixture.
Norwich City Under-21s: Ansen; Okwumo (Doy 81), Tomkinson, Wilson, Mahovo; Gee (Ogwuru 58), Bridge, Manning; Welch, Forbes (Djedje h-t), Mundle-Smith (Roberts 76).
Unused sub: Bullen.
Goals: Mundle-Smith (6), Ogwuru (87), Welch (90+4)
Bookings: Gee (54), Mundle-Smith (61)
Manchester United Under-21s: Graczyk; Kamason, Fredikson, Jackson, Amass; McAllister (Rowe 80), Gore (Moorhouse 65), Curley; Sharpe (Missin 71), Ennis (Wheatley h-t), Williams.
Unused sub: Kingdon.
Goals: Williams (20), Wheatley (48, 70, 90+9), Sharpe (50)
Bookings: Wheatley (57), McAllister (61), Amass (90+2)
Venue: Carrow Road
Attendance: 6,384