Manchester United fear Wayne Rooney could be out for the rest of the season?

Manchester United captain Wayne Rooney could reportedly miss the rest of the season due to a knee injury.

The England international was substituted in the 88th minute of the Red Devils' 3-0 defeat to Everton on Sunday.

While tests are yet to confirm the extent of the injury, The Telegraph reports that there are fears at Old Trafford that Rooney has suffered ligament damage and could be sidelined for a month.

Despite the possible layoff, it is believed that Rooney's injury is at the less serious end of the scale and there remains a chance that he will play before the season is out.

Louis van Gaal's side have four games left to secure a Champions League place as they currently reside fourth in the table, seven points above fifth-placed Liverpool.