Amorim had warned a home game against the Saints would prove a more accurate indicator of whether his side had made as much progress as had been claimed in the aftermath of a smash and grab raid at the Emirates Stadium on Sunday and so it proved.

Amad Diallo struck a 12-minute hat-trick in a dramatic finish as Manchester United came from behind to snatch a 3-1 win over Premier League basement boys Southampton at Old Trafford.