I'd add Per and Gibbs to that list too. If Sagna is to leave (which looks likely) then I would keep a hold of Vermaelen as back up CB or as LB. Similarly, I see nothing wrong with Rosicky either. And I rate Cazorla a LOT! I think he is a fantastic player and has been one of the most consistent players since his arrival. I would also keep Podolski as he pretty Lethal infront of goal. Then add to the mix one of my favorite players, Gnabry and we look good.
These are the players I want IN v/s players going out:
OUT: Bendnter, Sanogo, Park, Arteta, Sagna, Flappy
IN: Bender, Remy, Athletico madrid striker (whoever that may be), Piszczek for RB
Players I'm on the fence about: Monreal, Flamini, Giroud. Regarding Giroud, I'd rather have him than not have him. He has scored 21 goals + counting and that is no mean feat tbh.