"The first question I would ask is, does he want to stay or not? It is essential to understand this," Vialli told Tuttosport.
"If Pogba says that his dream is to win the Champions League with Juve, then I would think twice about selling him.
"Because players of this ilk, beyond their technical value, bring something extra special to the group. You want these players around you, if you think you can continue to grow in Europe.
"And then you are also willing to give up so much money, because players of this type are priceless.
"But if Pogba has doubts about his future at Juventus and ambitions perhaps away from Turin, then it is right for Juve to think about it. And understand if there is a chance to optimise the situation, to see a fantastic player that everyone wants.
"From a similar situation emerged the sale of Zinedine Zidane, which earned enough money to have a big transfer spend themselves."
For breaking stories and all the great banter like us on Facebook: facebook.com/tribalfootball