Erik ten Hag demanded an apology from Fulham for posting a video on social media mocking Bruno Fernandes following the 'Cottagers'' 2-1 win over Manchester United at Old Trafford last Saturday.
The video, on Fulham's official Tik Tok account, shows the midfielder going down and clutching his leg after a challenge, only to get back to his feet moments later as play continued.
"It's absolutely not right a club makes such statements, because it's totally out of order and they were wrong. So they should apologise," said ten Hag at Thursday's news conference.
United are back in action on Sunday with a Premier League visit to local rivals Manchester City.