The Brazilian star has struggled since making a transfer to the Spanish capital from AC Milan in the summer of 2009. Madrid manager Jose Mourinho recently addressed Kaka's situation.
Per ESPN Soccernet:
Mourinho hinted that Kaka could still leave the Bernabeu but that nobody had shown an official interest in taking the Brazilian playmaker, whose salary demands are reported to be significant.
"Kaka's situation is completely different," Mourinho said. "We have no official request for Kaka; we do for Nuri."
A club such as Manchester United wouldn't be a good fit for Kaka because there wouldn't be much room in the starting 11 for him at Old Trafford. United already has enough players in its squad who deserve first team playing time.
Another team in the Premier League would be the best option for Kaka. Going to England and playing in the best football league in the world, while at the same time getting the time on the pitch he deserves, is the ideal scenario for the Brazilian.
Kaka is part of a crowded midfield at Madrid, and with his recent form, it's going to be tough for him to take time away from German playmaker Mesut Ozil. Madrid are at their best when Ozil is operating the attack.
There are several clubs that could use his goalscoring and playmaking talents. Manchester United, Tottenham and Arsenal are three clubs that could really benefit from Kaka's skills.
If he still wants to play first team football, then the Premier League is the place for Kaka, whether it's a move on loan or a permanent deal. This is the only way for him to return to his old world-class form.