Rio Ferdinand and Robbie Savage singled out Andre Onana for his 'non-existent' communication with Patrick Dorgu in the build up to Jaden Philogene's opening goal for Ipswich at Old Trafford on Wednesday evening.
Man United ran out the 3-2 winners on home turf, but their three points were not won without strife, with Ruben Amorim's players behind in the opening five minutes courtesy of Philogene's strike.
An own goal from Sam Morsy helped the teams get back onto level footing before Matthijs de Ligt could help the hosts into the lead, but United were hampered by a risky challenge from January recruit Patrick Dorgu that saw the defender handed a straight red card.