We'd probably have some issues of players settling since half of the team would have quit in the summer.
His Galatasaray team, with Drogba, Sneijder, Yilmaz, Melo, and others lost 1-0 to FC Copenhagen during the week and 2-0 to Fenerbahce tonight.
He isn't coming back, probably not ever unless of future regime changes. So be happy with what he achieved and move on.