Pogba is probably the most frustrating player I've ever witnessed. He had everything in his asset to become the best AMC in football history. He had size, he had speed, he had physical strength, he had amazing dribbling skills and towards the early part of his career he had ambition as well. Unfortunately he was too impatient at the earliest part of his career. That led to him leaving United who wanted to develop him properly to move to Juventus.
At Juventus they could close an eye or two to his inexperience simply because they had one of the best CM of the time. Vidal was at the time the closest there was to prime Roy Keane while Pirlo provided the leadership and football IQ Pogba needed. Pogba brought pace, speed, power and flair to that midfield however that's all they needed from him. Add to Juventus managers of the time (Conte and Allegri) who couldn't be arsed developing him + the Serie A whose slow pace and little physicality allowed Pogba time to think and a chance to batter ram his way into any defense and Pogba became an imperfect beast of a player who was suited for the Serie A but hardly anywhere else.
Pogba should have never came to United. Mourinho didn't really liked him and Woodward wanted him as a slap to the face to the old regime. That added a certain hostility by the old guard but it also contributed for certain good criticism to be taken the wrong way. Most of that criticism came from Paul Scholes who was the exact opposite to Paul Pogba.The ginger prince became an exceptional CM despite his limitations (asthma, lack of height, trained to be a striker for most of his early career), Pogba on the other had won the football and genetic lottery. He was designed to become a WC midfielder, at par if not better to Zidane.
Then Ole came in and the agony aunt era started built on vibes and hugs. We had players who pretty much did whatever they wanted which suited Pogba and his mates JLingz, Rashy and co. It didn't help that United would develop an obsession on no 10s. Bruno came in, Pogba was expected to play deeper and guess what? Apart from rare exceptions no 10s playing as No 8s is hardly the best of ideas. Suddenly Pogba was expected to cover a ridiculous amount of pitch, defend, drop deep, tackle and do all those stuff he didn't like to do, he had no intention of doing and quite frankly didn't know very much how to do them. Worse still he didn't had Deschamps or Conte (two former hardworking CMs) to understand him nor he had Kante and Vidal covering his arse. What he had was a Matic who was way past in best, Mou who had since entered his toxic era and of course Ole whose tactics seems to be a copy and paste from FM.
Once again Pogba fount himself on a free but the guy Juve signed second time round was not the kid who was hungry for success they signed from us earlier on. He was obsessed on his brand, he had lost his love towards football or any sort of hardwork and was, quite frankly, looking for his last pay cheque. We had lost an entire generation of players (Rashford, JLingz, Pogba and others) simply because we prefer to hug players then instil some proper discipline inside the club.. So in the end even Juve ended up with their fingers burnt.