Ruben Amorim has challenged Amad Diallo to keep improving after the 22-year-old scored a dramatic 12-minute hat-trick to help Manchester United snatch a 3-1 victory over Premier League basement boys Southampton in a dramatic finish at Old Trafford.

Amad Diallo scored a dramatic hat-trick in the final 12 minutes as Manchester United came from behind to beat Southampton 3-1.

Match report and free highlights as Manchester Uniteds Amad Diallo produced an astonishing hat-trick with all three goals coming late in the game to beat Southampton at Old Trafford; win lifts Ruben Amorims side to 12th;