The injury seems to be the main problem for Dybala right now. The management is also right to question his worth because generally if you pay for something you would want something in return.
That's where the injury case has made things worse. And losing him for free would surely be a great shame. But, I think that he could have made a great duo with Dušan Vlahović.
How bad was his injury?. it's not worth it when can't play anymore. If only resting for several weeks of the course isn't affected by the price. Dušan still didn't play yet, we don't know how good he was when made it duet with Dybala. Allegri will definitely defend him stay on Juventus if suitable for each other like Del Piero and Inzaghi but both need playmakers like Zidane, where Juventus don't have right now.