Definitely think if he's not given reassurances of first team football he will leave, can't see him coming back and sitting on the bench, I'm sure he find one or two attractive offers. Wouldn't be surprised either if he feels like he just needs a new start somewhere else. I don't see the love he once had for Arsenal like he did for the first few years at Arsenal burning in him, where I saw a young lad that would be here all his career.
Shame, if Wenger stays, I doubt he get that first team football he's looking for. I'd sell him off to a mid table side in the PL instead of letting him run down his contract to go off to a top PL team.