"When I was at Arsenal, it was all about statistics and perfect football," he told the Mail on Sunday.
"I don't want to play perfect football. I don't want a cross of mine to be a statistic. Everything I thought football should be wasn't happening at Arsenal. So, six months after signing a five-year contract, I decided to go.
"Please don't get me wrong, sometimes I can be rash, but I honestly don't have a bad word to say about Arsene Wenger. He didn't pick me because he had world-class players, but I just wanted to play. But there was no banter there, it was boring. I like to enjoy my time, playing with my mates. This is a great job, I want to play it naturally and I wasn't enjoying it. Enjoyment is everything.
"I don't mean p****** about, turning up drunk. I mean enjoying what you do, enjoying trying to improve. If you don't enjoy your job, change it. You don't have long in your life, do you?"