The Bianconeri have reached an agreement to sign the Frenchman on a four-year deal.
The medical will take place on Saturday and the contract will be signed that day.
Since January, the France international has been free to talk with clubs.
The Frenchman left United at the end of his contract.
It will be a return to a club where he spent four years before rejoining United.
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He knows this could be his last big move and he wants to make sure he makes the right decision.
The club drafted a lucrative contract in order to demonstrate their desire to sign him, after making a stunning bid to sign the player from United.
The World Cup winner didn't think the noise and hate would be worth it.
Despite reports that he was offered two contracts worth more than $300,000 a week, the Frenchman didn't get anything.
He was offered a 3.5 percent increase on his contract.
In 'The Pogmentary', the late Mino Raiola's agent talks to his client about the second proposal.
Is there a second offer from Manchester United? He asked Raiola.
Raiola said yes. They don't want you to leave. I don't think the offer reflects that. I told them not to make that offer. If they want to build a project around you, they have to act differently and put the money on the table.
"They're playing a game." How can you tell a player that you want him and that you won't give him anything? It was the first time I've ever seen that.
The summer is here. The world transfer record has just been broken by Manchester United. A Frenchman is back at Old Manchester for work.
"This is the right club for me to achieve everything I want to in the game," Paul Pogba said after completing his £89m move back to United.
He has the chance to be at the center of the club for a long time.
It was a deal that got people talking. The announcement video was followed by a music video featuring Stormzy. The hype over the movie had started.
It was supposed to be a big deal. Three years after the retirement of Sir Alex Ferguson, the club is still struggling to find its feet.
But he has not been able to inspire United. He did not win a trophy in his six-season stint.
The transfer window will open on June 10 and close at 11pm on September 1st.
Sky Sports has a dedicated Transfer Centre website where you can keep up-to-date with all the latest news. Sky Sports News has the ins, outs and analysis on a daily basis.