Owen Hargreaves was left stunned as Man United Andre Onana gifted Bayern Munich the opening goal in their Champions League group stage match.
The Man United goalkeeper allowed Leroy Sane's weak effort to slip through his grasp in the first half of their tie at the Allianz Arena.
Onana's mistake was compounded by Man United conceding a further two goals before half-time.
Former Man United and Bayern Munich midfielder Hargreaves, speaking on TNT Sports, was shocked by Onana's error for the opening goal.
'You just have to save that.