There's a reason why nobody wanted Ozil even on a free and he didn't even want to move despite 0 chance of game time. Only Arsenal fans don't want to recognise it, but he hasn't been good enough even before Emery came. He's been terrible at Fenebache for what its worth.
Compare that to Auba, clubs queueing up for him, he takes a paycut to force a move. Why? Guy is still the best striker in this club by a long mile and has singlehandedly drag this club to win a trophy we have no rights to. Will be fondly remembered unlike Ozil.