But the Brazilian is hopful that Chelsea striker Andriy Shevchenko could return.
Kaka said in an interview to La Gazzetta dello Sport: “I think Milan have moved further away from Ronaldinho if compared to three months ago.
He added: “I don’t think he will move here as he seems set to stay at Barcelona.
“As to Sheva, I really hope he comes back. I speak to him often, but unfortunately there are rules in football so you can’t just turn around and leave.
“I am sure he would already be here if the decision was only up to him, but it seems there might be some problems.
“[Barcelona’s] Samuel Eto’o is an alternative as he is a great player, but Sheva would have no difficulty in adapting immediately as he knows everyone here.”