From the outside looking in it looks like he'll go to Besiktas on the cheap because of all the clubs that do want him, he isn't interested and would rather go back to his old club.
He has a history of thinking he's too big for clubs, Palace first time around for example.
Same thing happened with Walcott. Southampton can easily afford his wages especially with no fee on top, but he got to go back home because that's where he wanted to be and we're out of pocket because of it.
We're too nice when it comes to letting players go back home on the cheap.