This is confirmed by the press service of the Mancunian club.
It is also reported that the player will sign the contract with the club after receiving a visa and passing a medical examination.
Thus, the Portuguese will return to United after 12 years.
Ronaldo moved from Manchester United to Real Madrid in 2009.
Ronaldo, 36, has been playing for Juventus since 2018.
Last season, the Portuguese scored 29 goals and became the top scorer of the Italian Serie A. His contract with Juventus runs until June 30, 2022.
Earlier it was reported that Manchester United intends to offer a contract to Ronaldo.