The former Barcelona player, who was landed at San Siro last summer, proved his worth with Carlo Ancelotti's men, but Kaka reckons he's not totally compatible with the team.

"Ronaldinho is settling in very well and is giving us a great hand, but there are tactical issues we need to understand," the 26-year-old was quoted by Calcio Italia as saying.

"Before his arrival we were accustomed to playing in a certain way and had learned the movements by heart."

The 2007 world best player believes he cannot move freely in the field as he used to before the arrival of the flamboyant playmaker.

"It was [Clarence] Seedorf and I behind a striker, who was almost always [Pippo] Inzaghi. With Ronaldinho turning up there have been some tactical modifications," Kaka added.

"Personally I had always started central and moved wide left as I approached the box, but now Ronaldinho is there and that limits me a little bit."