By ESPNSTAR.com staff
The Brazilian playmaker is one of the most famous footballers in the world and his jersey has regularly outsold that of other players in the game.
But he was also signed for a then-record fee of €68.5 million and has had to contend with extremely high expectations at the Santiago Bernabeu.
Real boss Jose Mourinho has regularly picked Mesut Ozil ahead of the Brazil international, however, and the recent acquisition of Luka Modric from Tottenham has further put Kaka's place in the first team in jeopardy. Over the summer, reports had linked him with a loan move to some of the top European sides although he remained part of the Los Blancos squad for the 2012/13 season as they bid to defend their La Liga title.
And Perez suggests that Kaka is far too valuable an asset to simply let footballing concerns dictate his future.
"We've never said that we wanted to sell Kaka, and we've never tried to sell him," Perez told supporters at an assembly of club members.
"Kaka has earned us lots of money.
"He came to the club three years ago as an investment that has brought us big profits. Economically speaking, it's a transfer that has borne fruits."
It is known that Galatasaray are interested in placing a bid for the 30-year-old in the January transfer window. And it now appears that Anzhi Makhachkala could also join the list of suitors as Shumi Babaev, a prominent agent working with the players at the Russian club, revealed that talks have already begun to try and secure Kaka's signature in the January window.
"Anzhi has thought about Kaka for a long time, however, he is not the type of player that can be signed easily. We can speak accurately on the eve of the opening of the transfer market," he explained.
Anzhi have a host of international stars on their roster and previously signed the likes of Christopher Samba, Samuel Eto'o, Lassana Diarra, Yuri Zhirkov, Lacina Traore. They also have former Real legend Roberto Carlos as a sporting director as well.