The Dutch striker was branded a "snake" and a "traitor" when he left the Gunners for Sir Alex Ferguson's side in a £24million move on this day in August 2012.
"After eight years, my wife, possibly got a bit tired of me. Those are the facts.
"Then you have a look around. I was ambitious. I still wanted to win the league. That is life.
"I ended up having three options. One option abroad disappeared quickly. Then it was City or Manchester United.
"What people don't know, during the transfer, loads of things are happening behind the scenes.
"You have to take a lot on and make a choice based on what your targets are but also deal with the facts.
"One of the main facts was that Arsenal got tired of me. That was the starting point - they didn't offer me a new deal.
"We had loads of chats with Wenger, with [Ivan] Gazidis. They gave me no decision to make."