Kaka says he's moved to Real Madrid to win another Ballon d'Or.
The former AC Milan star declared: "I want to win another Ballon d'Or as a Real Madrid player. To achieve that individual honor requires major trophies. I am fortunate to belong to a club capable of winning many titles.
"That was the main criteria for my choice: to be part of a team that will allow me to remain in the history of world football."
Kaka says he still can improve as a player.
"The left-side of my game and my mind is weak. I need to improve tactically and physically," said the midfielder.
"I learned a lot in Italy, especially in the tactical aspect."