Did anyone here even watch Kaka play for Milan in last two seasons? He had the freedom to roam anywhere. He mostly chose to stay behind the striker to latch on to late balls or play through balls from deep because that is the role he is most comfortable in. But still, plenty of times he popped up on either wing to take on a player like a proper winger.
He started as a right sided forward at Sao Paulo and even in his debut season at Milan he started to play the roaming role and adapted himself there with in a season.