The Special One has even made allowances for the forward suffering a dip in goals and form because of how sensational his breakthrough season was.
Mourinho said: “He says he is learning so much in the technical meetings and training sessions so I think his future will be brilliant.
“His present is good and we need him.
“I'm always happy with Marcus Rashford's contribution. He is one of those players that when he is on the pitch he tries, he always gives something.
“I know that last season under no pressure, in front of the goal, the goal was bigger.
“I know this season the expectations are higher, the pressure is higher and the goal is smaller.
“The second year after a season of explosion and expectation, everything changes.
“He's not anymore the surprise kid, he's a player that everybody respects, that everybody knows, that everybody knows the qualities and it's normal that he's in this period of transition where he's still a kid but he's not anymore the new kid in town."