Manchester United have confirmed Eric Bailly has suffered medial ligament damage.
Bailly has been ruled out for the rest of the season with the ligament injury to his right knee.
Bailly sustained the injury against Chelsea in the 1-1 draw at Old Trafford on Sunday.
The Ivory Coast international will miss remaining Premier League matches against Huddersfield and Cardiff , and will be unable to play at the Africa Cup of Nations for his country.
Bailly had hoped to represent the Ivory Coast in Egypt - the biggest edition of the competition yet with 24 sides taking part between June 21 and July 19.