"I didn't play a lot (under Mourinho) unfortunately, but I still respect him," the German told BBC Radio 5Live.
"He's a great manager who has won a lot of trophies. It was a weird and difficult situation, he never really explained to me why (I didn't play).
"Of course the game style is different - I think that is why Zlatan left. It was not so much football, sometimes it was more direct. But he had success with his teams. It was just a strange feeling."
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