Marouane Fellaini has undergone surgery in an attempt to resolve the knee ligament issues that have dogged him this season.
Jose Mourinho confirmed the news after Manchester United’s 2-0 win over Huddersfield and expects the Belgium midfielder to be out of action for two months.
Fellaini has already had two lay-offs of six and four weeks since first sustaining a medial ligament injury in his left knee on international duty against Bosnia in October.
He limped off against Tottenham in midweek with a lateral ligament problem in the same joint just seven minutes after coming on as a substitute.
Mourinho said: ‘He had surgery this morning. I don’t want to be very specific, I would prefer the doctor to give you some information officially.
‘It’s not the end of his season, not at all. It’s a small intervention in his external (lateral) meniscus and I want to believe that by the end of March he can be back.
‘And if he can be back by the end of March, I hope we have a big April and a big May still to play in more than one competition.’