A few days ago ozil said he was staying, one phone call with wenger changed that. This is one signing that you credit wenger with. He convinced the player, a genuine world class player to sign for us. Gazidas did his bit by getting the money side right. But this is wengers signing, and he deserves all the credit.
Remember how wenger said spending money on proven quality is not a problem for him? He's right. No haggling, no dithering. He wanted ozil and got it done.