I think he played as a winger for them as well, and then by the end shifted to the 10?
His current role as our 10 makes the most sense, he can still press for ages, but doesn't NEED elite pace, and can instead feed our pacy players.
That being said, he has this "Yaya-like" burst he can do where from a stand still he just bulldozes past players with his upper body, he is playing like Prime Yaya for us right now, and for a while.
He was the number 10 in a 4231.
Hes no slouch now, but back then he just had more. Aguero was the same before his injuries, just had that 5% extra to show defenders a clean pair of heels whereas now they are often fighting someone off when they make the killer pass or get a shot away.