AC Milan vice-president Adriano Galliani has hinted that the Serie A club could look to bring Kaka back to the San Siro.
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Kaka, 30, has struggled to live up to the £50.7 million transfer fee paid to AC Milan by Real Madrid for his services in 2009.
The Brazilian has regularly been linked with a return to Milan, and this week Madrid assistant Aitor Karanka appeared to indicate that the playmaker's future is uncertain.
"Kaka and the club are working to find a solution that is good for both parties," Karanka said after Kaka was left out of Real's friendly against Oviedo.
Speaking on Wednesday, Galliani told Gazzetta dello Sport: "Some loves never end, they may go away for a long time, but they always return."
Kaka made 17 starts for Real Madrid in La Liga last season, scoring five goals and managing seven assists.
Meanwhile, Stephan El Shaarawy has signed a new five-year deal with AC Milan and admits he would welcome Kaka back to the San Siro.
El Shaarawy, 19, told gazzetta.it: "I'm happy to have re-signed. Next year I hope to do well, to do better. I hope to have the chance to play in more space. Becoming a team-mate of Kaka would be a dream, he's always been my idol.''