The club were in touch with the player since the beginning of the summer transfer window and were desperate bring back the midfielder who once was part of Manchester United's youth setup.
After several days of waiting and speculating about the much hyped transfer, it has finally taken place where Manchester United had to a world record transfer fee for the player to Juventus.
Pogba's arrival at Old Trafford broke the record of Gareth Bale's transfer which was reportedly £86 million. The Frenchman thus becomes the most expensive player in the history of football.
Manchester United confirmed the news on twitter as well as on their official website. Their tweet welcoming Pogba read:
The official statement from the club read: "Manchester United is delighted to announce that Paul Pogba has completed his transfer from Italian club Juventus. Paul joins on a five-year contract, with the option to extend for a further year."
After joining the club Paul Pogba spoke to the official site where he said: "I am delighted to rejoin United. It has always been a club with a special place in my heart and I am really looking forward to working with José Mourinho.
"I have thoroughly enjoyed my time at Juventus and have some fantastic memories of a great club with players that I count as friends. But I feel the time is right to go back to Old Trafford.
"I always enjoyed playing in front of the fans and can't wait to make my contribution to the team. This is the right club for me to achieve everything I hope to in the game."
On completing the most high profile transfer of the window, club manager Jose Mourinho said: "Paul is one of the best players in the world and will be a key part of the United team I want to build here for the future.
"He is quick, strong, scores goals and reads the game better than many players much older than he is. At 23, he has the chance to make that position his own here over many years.
"He is young and will continue to improve; he has the chance to be at the heart of this club for the next decade and beyond."