The Red Devils are looking to add a goalkeeper to their team this summer, with David De Gea’s future uncertain.
If the long-serving Spaniard leaves, Manchester United will be left with Dean Henderson and 37-year-old Tom Heaton in goal.
However, the Old Trafford recruitment office believes that a deal for Onana can be reached for roughly £50 million.
The 27-year-old is interested in a move to Manchester United.
Chelsea has spoken with Inter Milan about Onana, but negotiations have not yet moved.
The Blues are said to be keeping an eye on the issue and are not yet out of the running for the goalie.
The Cameroon international has sparked attention following a standout season in Italy when he helped his team reach the Champions League final.
According to a reliable source, Onana is eager for a reunion, which has pushed Manchester United to the front of the line for his signature following “positive discussions” between all parties.
Erik Ten Hag, the manager of Manchester United, is a “huge” supporter of Onana and has a great bond with him from their former partner at Ajax.
The Red Devils are anticipated to continue signing players in the coming weeks, with the goal of adding at least four players to the squad this summer.
Onana made 41 appearances for Inter last season and has 34 Cameroon caps.
Following their European successes, the Italian giants are expecting bids for several of their talents, with Lautaro Martinez, Nicolo Barella, and Alessandro Bastoni joining their goalie in generating considerable interest.