Mourinho eventually sold Depay in his first season to Lyon.
And the Dutchman recalled in his new book, 'Heart of a Lion', "Looking back Van Gaal had some good reasons to put me on the bench after a while.
"I didn't reach the level that time I needed to succeed at United. But when José Mourinho took over, the situation was different. In the beginning I felt confidence and I started to train at a higher level. At a certain moment I was killing it on the training pitch. But nothing changed my situation. That made it harder to accept than the season before. Even players like Zlatan Ibrahimovic, Michael Carrick and Paul Pogba asked me how it was possible that I never got a chance. Mourinho told me he was very happy with my level of play at the training and with my attitude. And that my chances would come. But they never came.
"During that time I lost it. After training I went home and didn't want to see anybody. That was mentally a very bad period. And it got worse every day. Looking from the outside I had a good life: being a part of one of the biggest clubs in the world, living in a beautiful home with a swimming pool, together with my best friend Gigi, driving in a Rolls Royce. But I was totally unhappy with my life.
"For the first time I lost the joy in playing football. The most beautiful thing in my whole life, football, gave me a very sad feeling. The frustration grew by the day and I didn't know how to change that. Mainly because at that time I didn't have the relationship with God I have today. Sometimes my frustration exploded. Then I started to throw with stuff at home. Pure rage and frustration. One day I even attacked my best friend Gigi at home. Out of the blue. My rage ended just in time before I would hurt him, but afterwards I felt so ashamed. For me that moment was the sign that I had reached rock bottom. I was shocked by my own behavior."