"I have time to talk about it and I'm sure I'll do an interview especially for them," he said.
"I'm sorry I couldn't say anything in the last two and a half months, Arsenal wouldn't allow me to talk to anyone, even if I wanted to I couldn't.
"I'm disappointed and upset about it because I have had a great relationship with the fans over the years. It took time to build this and I'm disappointed I could lose some of them.
"All I have are words of gratitude. I'll never forget what they have done for me, I gave absolutely everything to the club and I think they know that but it was the right time to come back here.
"I'm sorry I didn't say anything to them in the last few months but I couldn't. I was very, very sad to leave, I spent one third of my life there, eight years, so I'm very sad but life goes on."