Januzaj swapped United for Real Sociedad in the summertime, becoming a member of for a rate of £nine.8million.
The Belgian, who broke into the United first staff when David Moyes was once in price, discovered sport time restricted when Louis van Gaal took over and was once despatched out on mortgage to Sunderland when Mourinho succeeded the Dutchman.
Despite issues no longer finishing as he would have preferred at Old Trafford, Januzaj understands Mourinho’s resolution.
“Jose had to make things happen very quickly and make quick decisions,” Januzaj instructed the Daily Mail.
“I had no longer been enjoying for 2 years.
“He is a brilliant supervisor and he has been honest to me as a result of he let me depart to make stronger in other places.
“That’s how the arena is going and I glance ahead.”
Januzaj, who will now be hoping to make the World Cup subsequent summer time, admits he nonetheless chats to Sir Alex Ferguson.
He added: “’I do know Sir Alex is at all times on the finish of the telephone.
“The identical with Giggsy and David. Those other people will at all times again me.
“My first process now’s to provoke right here. I hope for a World Cup position. The international does no longer forestall.”
United in the meantime, shuttle to stand CSKA Moscow of their 2nd Champions League staff sport the following day (7.45pm).