First Massimiliano Allegri returns, and now this summer 2021 turns out to be a special one for Juventus supporters.For the past three years, Paulo Dybala has tipped to become the king of Bianconeri's forward line, a knight heir to the throne of Lionel Messi in Barcelona, and then suffered so much mercy that his current club has tried to force him out of the door at more than an opportunity. The arrival of Cristiano Ronaldo in the summer of 2018 completely turned Dybala's future upside down, as it quickly became clear that:…