Ruben Amorim issued a note of caution after Amad Diallo scored a late hat-trick to rescue victory from the jaws of defeat for Manchester United against Southampton.

Man United were pretty rotten yet again and seemingly heading for defeat against Southampton. Then Amad Diallo happened.

Amad Diallo scored 12-minute hat-trick to seal late turnaround for Man Utd against Premier Leagues bottom club Southampton; Ruben Amorims side were on course for fourth Old Trafford defeat in a row until Amads treble;