Kaka admits he spent the best time of his career with AC Milan.

The Brazilian announced his retirement earlier this year.

“In 2009 I accepted the proposal from Real Madrid, but after that move I was completely destroyed, because I couldn't replicate what I'd done for Milan," he told UOL.

“I was totally lost. In Italy, everyone had loved me, but in Spain they all wanted me to just leave. Plus Jose Mourinho was a difficult Coach for me to work with. When I thought he might give me a chance, it never happened.

“I didn't get the chance to prove my form to him. I trained hard, fought and prayed so much, but without the Coach having faith in me, I realised I couldn't work with him.

“I was so happy after leaving Real Madrid and returning to Milan, especially after Mourinho said I was one of the most professional players he had ever worked with.

“The worst defeat of my career, bar none, was the Champions League Final Milan lost to Liverpool. It was one of the toughest nights, and yet also the one I learned the most from. I learned that I would never have control over defeat and victory.

“That team was one of the best in Rossoneri history, one of the greatest defences ever, and yet conceded three goals in six minutes."