He has allegedly given his non-international players four days off ahead of the match which will be a great morale boost for the squad.
The Portuguese boss arrived at the club with a fixed day off policy and quickly endeared himself to his squad, mainly his senior players who now get to spend more time with their families.
Man United travel to Liverpool on 17 October and his internationals should have enough time to recover from their participation.
Valencia arrived at the club one day before the Manchester derby, but he’ll be playing on Tuesday and should have more time to recover than last break.
Mourinho’s men head into a busy month of fixtures and the Portuguese boss will be hoping his players are fighting fit as they face the likes of Liverpool, Chelsea and Manchester City.