The 48-year-old was quick to dismiss a reported switch for the Brazilian to Paris, also making light of the IFFHS' decision to name Pep Guardiola the best coach of 2011
Reports from France and Spain have suggested that the 29-year-old is a January transfer target for Paris Saint-Germain, with the Parisians supposedly prepared to bid up to €23.5 million to take him away from his current club.
Speaking on Friday, however, Mourinho guaranteed that the player would be lining up for Madrid until the end of the season and beyond.
"I will have Kaka until June and the coming season," the Portuguese coach affirmed to AS, when asked about PSG's interest in the player.
Mourinho also spoke light-heartedly about Barcelona trainer Pep Guardiola, who was named the best coach of 2011 by the IFFHS.
"The award given to Guardiola is deserved. I just hope that he does not have to wait too long to receive his prize because I won the same thing in 2010 and they still have not given it to me," the trainer joked.
The Madrid boss concluded the interview by praising the efforts of upcoming opponents Granada and especially their loyal fanbase.
"It is wonderful to see the Granadans travel so far to see their team in the Bernabeu. In Spain there are not many teams like that, if I was a player or trainer at Granada I would be very proud of the support," he explained.
"We need to win more than they do, because they are already in a good position. I hope that it will be a great game."
Real Madrid and Granada meet at the Bernabeu on Saturday evening, in the first round of Liga fixtures following the break for the holiday season.