pretty sure Mandzukic is not going to play a single game this season. if he is not sold or released there still likely wont be room for on the squad registration list so you can relax.
I give a warrior like Mario the benefit of the doubt. Everything went through so quick and now you give him so little time to think things through. Mario deserved to be treated with more respect and ball was in Juve's court to have prepared/finished departure long before now.
They gave him a new contract on April, not that making it longer makes it harder to sell (if anything easier for most players), but you have to wonder why they did it.