You cant get rid of a player with an iron clad contract. Even if you wanted to pay him off you cant unless the contract stipulates it. Ozil is all on Wenger im afraid.
But back to yesterday. Pepe has just been here 6 months. He just watches Fernandinho waltz by him without even attempting to tackle. Im pretty sure he didnt learn that where he was coming from. We breed lackadaisicality. They catch it within days of arrival