Birmingham signing Hleb: I regret walking out on Arsenal
"It's very professional here but at Arsenal everything is new and a bit better at the training ground, plus they play in the Champions League every year.
"I regretted leaving Arsenal. Not a lot of players say 'No' to Barca. But if I'd known before what would happen, I wouldn't have gone there. I was unhappy. I didn't play much. I lost form and confidence."