The Brazilian playmaker has been deemed surplus to requirements at the Bernabeu by coach Jose Mourinho and admits that he is desperate to return to Italy to play for AC Milan, which he left in 2009.
Kaka told Sky Italia: "To come back to Milan, I am ready to do anything.
"It's not a good situation for me at Real Madrid. I have already asked Milan to find a solution because during my time with Milan, I enjoyed some of the best moments of my life."
The 30-year-old has made just seven appearances in La Liga this season.