He belongs in a tier of players way too underrated, so so so underrated due to his price, I'm playing with hunter in a 4231 (RCAM) I've tried a lot of CAM/Winger but for me Rosicky is a perfect mix that give me (only elite division and champions) :
Not that much to be honest, the fact that he doesn't have quick step/rapid but to be honest that would change the player, with him I'm learning to actually out pace/skill defenders.
He could missing the 5 stars skills and relentless.