These players will be there if they're healthy:
Begovic, Mujdza, Spahic, Vranjes, Bicakcic, Kolasinac, Medunjanin, Pjanic, Salihovic, Hajrovic, Lulic, Misimovic, Dzeko, Ibisevic
The other two keepers will probably be Fejzic and Avdukic. Buric has been injured since July and isn't even on the radar it seems so I doubt we see any surprises there.
That leaves seven spots, three of which I think will go to Zukanovic, Visca, and Vrsajevic.
Susic, Ibricic, Zahirovic, Stevanovic, Hadzic, Kvrzic, and Rahimic to fight it out for the last four spots.
Don't think we'll see any surprises or new faces unless someone like Arslanagic gets his papers in time which is unlikely.