Kaka has asked AC Milan to stop paying his salary until he recovers from an injury.
In a video message on Monday, Kaka says "I don't want anything from Milan except for love and support until I am better. ... for this reason, I have decided to suspend my current pay for this period of time."
Kaka returned to Milan in the off-season, four years after leaving for Real Madrid in what was a world record transfer at the time.
The Brazilian is expected to be out for about a month with a left adductor injury.
Adriano Galliani says Kaka was "crying" on the phone when he called the Milan vice-president to inform him of the injury and his decision.