With Mesut Özil in good form, Angel di Maria in great form, and both Jose Callejon and Nuri Sahin starting to come into the team, the opportunities seem to be few and far between for Kaka at Real Madrid. Though only Özil plays the exact same preferred position as Kaka, Madrid can only fit so many attacking players into the same team. As solid as Kaka has looked when he has had an opportunity to play for Los Merengues this season, Jose Mourinho has better options, and Madrid could be looking to sell the Brazilian playmaker.
Kaka joined Madrid in 2009 for the third highest transfer fee ever played for a player, with fellow Madridistas Cristiano Ronaldo and Zinedine Zidane holding the other two top spots. Paris Saint-Germain will be among those interested if this rumor is indeed true, even though they have a similar issue to Madrid with Javier Pastore. Chelsea have been linked to Kaka in the past, and his former club AC Milan could also get into the bidding with Clarence Seedorf aging and Antonio Cassano recovering from a minor stroke.
For more on Kaka and Los Merengues, check out Real Madrid blog Managing Madrid.