Milan are in talks over a loan deal for the Real Madrid midfielder.
Tassotti remarked: "Kakà? I have to think about the games, the market is left to the club and if a major player, as Kaka is, arrives you must find a place for him.
"Putting him in front of the defence? Kaka made his career working up to play as a second striker. To play him in front of the defence would take time. We must focus on our players, but it is clear that there is much affection for Ricardo and he is appreciated by all."