We can't convince even our 4th choice striker, who'll hardly get playing time, to accept a switch to Fiorentina. I'm sure our first choice striker will accept a pay cut from 3m eur to something like 1.5m eur and leave Juve for Fiorentina. Not to mention how Vucinic's departure will make Juve twice as attractive for Jo-Jo.
Yeah, it's far too late. It would require a lot of cash thrown at them to consider selling when they have no time to find a replacement, and that is not Marotta's style.