Sane is guilty of letting Bayern take the piss. He could just stress that he doesn't want to leave City on bad terms of which this courting of him in the media is doing.
He could also tell them he'd be unwilling to join on a free next season and would rather sign a contract extension if they couldn't agree a fair price. I believe he's done neither of these things.
He could also tell them he'd be unwilling to join on a free next season and would rather sign a contract extension if they couldn't agree a fair price. I believe he's done neither of these things.