The performance of Pogba in Manchester United is a failed one for his own record and for the club as well. With his skills and potential, he would have performed better if he played more carefully and more focussing so that he would have made more contributions for Red Devils. Manchester United don't have anything to feel regret when they let Pogba leaving the club as a free agent. At least they know they he can not contribute more and they can not rely on Pogba to keep the club moving upwards. He can be part of a great team like France but he can not a core of a recovery and development plan of a club. He is not good for this type of important role.
Pogba is a mood player and for some reason this mood appears only in matches for the French national team. I am generally amazed when a person receives his salary in games for his main club, but gives his all in matches for the national team of the country when pennies are paid. Manchester United, in any case, should worry when such a player came to the club for a lot of money and left for free from it. By the way, I wouldn't be too surprised if Pogba does well in Italy, because the style of football and most importantly the intensity is much higher in England than in Italy.