Keep Nobby, Poljak & Milos.
Dump Leo, he's not happy here & homesick (obs from social media) and not worth the coin for sporatic appearances.
Enver lacks quality, and a suitable local can fill his spot.
Milos should be retained as at least he has been scoring. He's wasteful but I doubt we're paying overs and at least he's done a job in a difficult season. Poljak, like most water carriers, is underrated by the masses.
Nobby is worth a punt at Leo's expense.