He said: "To be honest I probably wasn't ready to come to England back then. I was young, I had very little experience of football and I don't blame Arsenal for the decision they made.
"I wasn't going to give up because of it, though. I went away and learned how to be a footballer.
"The game has been good to me so there are no regrets from me. I am happy where I am. Barcelona is a great club, a beautiful place to live, a fantastic city. I loved it there. But I had my time there and I have moved to Manchester.
"I am happy here and I want to help City be successful. That is all."