He is very much ready for Juve in the sense that he is better than Sturaro. If he is ready to be important for Juve its early and hard to say.
What he could bring to Juve is that he would be our only actual DM/regista except Marchisio. Bentancur looks like he can play regista properly eventually and probably get good defensively as well, but its a different style. This is Mandragora's natural role. He has always been the DM and at Pescara he played between the CBs (the Bonucci role) at times.
While Crotone is truly a scrub team, it does him well to play 90 min every week.
So in terms of style yes he can contribute to us. In terms of quality right now, who knows. Even from watching Crotone occasionally its hard to say. He could do with a loan to a team like Chievo to play it safe, or just go for it with us.
I doubt that we will ever use him again as Khedira will be replaced by Can and Bentancour is ahead of him. If Strootman's joins in the top of that, we may as well sell him!
from what I've seen watching Serie A highlights every once in a while, this guy has a nice vision and is playing with crap teammates. I wish we get rid of Sturaro and give his spot to this guy