Not the end of the world. That is pretty much what the rest of the players will be doing.
For the record, al those who complained every time we sold a player with one year left on his deal, this is why you do it- because keeping them for the last season creates this kind of fuss and costs you a fortune. It was a desperate and idiotic idea that shows just how poor the decision making is in the club. As much as I blame Wenger, it isnt solely down to him.