Manchester United great Roy Keane felt the FA Cup victory over nine-men Fulham papered over some emerging cracks in Erik ten Hag's side.
United booked a Wembley semi-final against Brighton with a comeback victory at Old Trafford but only after Fulham conceded a penalty, shipped two goals and saw two players and the manager sent off in a mad five-minute period.
The Cottagers deservedly went in front when Aleksandar Mitrovic headed home in the second half. But Willian was then sent off after a VAR review for handling Jadon Sancho's effort on the line with visiting boss Marco Silva and goalscorer Mitrovic dismissed for their protests.