He's still young so there's plenty of room to grow, but his attitude seems like a problem. There's a difference between tenacity and just being a clearing in the woods, and I think he's more of a clearing in the woods at times. That said, it could just be a result of all the problems at Arsenal this year.
But even if that's the case, I'm not sure I could cope with having some Kenny G/Yanni lovechild roaming the midfield at Villa Park.