Real Madrid ace Kaka is happy former teammate Andrea Pirlo is staying with AC Milan.

Pirlo has rejected an offer from Chelsea and Kaka said: “Andrea Pirlo will be a decisive player for many years at Milan. He is a genius of football.”

On the Milan derby, Kaka added: “It would be nice if Pato and Ronaldinho scored the decisive goals in the derby. It would be a wonderful boost for them at club and also international level.”