Manchester United boss Jose Mourinho fears Antonio Valencia could be out of the derby against Manchester City.

Valencia might be forced to miss next weekend's crunch derby showdown with Manchester City because of international duty.

The defender will be away with Ecuador and is not due to return until 24 hours before United are set to meet Pep Guardiola's men.

Mourinho said: “The day before Man City, we will still have Antonio Valencia arriving. It will be a complicated process, but we know it is like this when we have these players."