Pogba is a player who was Allegri's first choice before, so it's normal if Allegri wants him back, apart from needing players who have good goal-scoring instincts, Allegri has a tough task to face next season in order to win the title again. If he manages to bring Pogba back, along with several other new quality players, then Juventus can destroy the dominance of Milan and Inter in the last 2 seasons. But, I agree with Furious 7, bring in back ex player sometimes far from expectations, if Allegri can't manage this, so maybe Pogba can do much for the team.
The best thing for Allegri is to go out from Juventus. His time is finished and Juventus should also know it. They need absolutely a new manager. It's absolutely ridicolous and awful to see that Juventus, as a big team is, does
only 1 goal, max 2, in one match, with an attack formed by Dybala-Morata-Vlahovic, is absolutely ridicolous !
They need someone of special, like Zidane