He was dropped by Arteta due to disciplinary issues.
He left Barca because he was robbed? That's one story. Others have said it Lewandowski coming in and his playing time reduced. Also no one likes his "demeanour."
And he got dropped fast by Potter.
I don't know. 3 teams in 18 months seems like a pattern. I wish he'd go to Club Foot to be honest. Would be a good replacement for Kei Kamara.