Sao Paulo president Carlos Miguel Aidar has revealed that the club are eager to sign Kaka this summer.
Recent reports have suggested that AC Milan are willing to sell the Brazilian in the near future, and a return to the club who allowed the attacking midfielder to initially move to Italy could be a possibility.
"I say this in an official capacity - Kaka will only not return to Sao Paulo if he does not want to," Aidar told ESPN.
"But at the same time, we will only begin any conversation from the moment he shows an interest in returning."
The 32-year-old has recently been linked with a switch to Orlando City.
