The Swede left United in January for the MLS.
He told ESPN: “It has come out in the media that coaches have problems my character. That is not true, I will tell you now.
“I didn't have problems with any coach. If there was a problem, it was the coaches and I didn't know about it.
“I had Mourinho. Everybody knows that he is for discipline and respect – and that is on a high level.
“He doesn't accept anything and I didn't have one problem with him."