Juventus had originally said that they would only let the player go for £100m but will now accept £92m if United pay Raiola's fee.
The Red Devils will invest a total of £151 million for Pogba, including a £100 million transfer.
The France midfielder has won four successive Serie A titles, the Coppa Italia twice and finished as a Champions League runner-up since his move.
If Paul Pogba arrives at Manchester United it could usher in a new era at the iconic English club, so says former defender Rio Ferdinand.
Pogba was an integral part of the France side that reached the Euro 2016 final although his performance in the 1-0 loss to Portugal received a panning.
United jetted off on their pre-season tour of China on Tuesday, but it's also being reported that Ed Woodward - United's vice-chief executive has remained behind in order to complete the deal for Pogba.
According to Don Balon, Paul Pogba had confessed to his French teammate Antoine Griezmann that he will be joining Manchester United this summer. Anyone who has the opportunity to leave Juventus has to consider things very carefully, because right now Juve are among the top four clubs.
"Saying that we need another two or three players is unfair, especially as I don't want to talk about transfers, but the club is working well and knows we need alternatives".
The Real Madrid manager, Zinedine Zidane, said earlier this week that he was "happy with the squad I have got and it's hard to improve on it", before adding: "Do I like Pogba?"
Providing boost for Man United is Pogba's agent, Mino Raiola, who also represents Mourinho's recent acquisitions, Zlatan Ibrahimović and Henrikh Mkhitaryan.
While all parties are keen to conclude a deal as soon as possible, Raiola is not believed to have set a particular date, report the Manchester Evening News.