The Swede remains bitter over his treatment at the Nou Camp.
"When I left Barcelona, I said to myself: I’m leaving the best team in the world but there is a person having a problem with me," he explained in Four Four Two magazine.
"He’s not a man, not telling me what the problem is. But without knowing what the problem is, I will be the man and I will leave.
"For a couple of months I was walking around trying to get answers but I didn’t get any, so at the end I said: ‘This is bulls**t’, I don’t need this, I will go somewhere I know I will get answers and where I can play my game."