The Portugal international enjoyed an impressive 2021-22 campaign at Old Trafford despite the team's struggles, scoring 24 goals and registering three assists in 38 appearances in all competitions.
There has recently been speculation surrounding the 37-year-old's future in Manchester, but he is expected to stay with the club for the 2022-23 season.
The Red Devils are said to be keen to sign a new forward in the current market, and according to The Express, Ronaldo has given the green light for the club to bring in a player in his area of the field.
Man United had been strongly linked with a move for Darwin Nunez earlier this summer, but the Uruguay international has since joined Liverpool in a big-money deal from Benfica.
Erling Braut Haaland was also viewed as a target last year, but Manchester City won the race to sign the in-demand centre-forward from Borussia Dortmund.
Robert Lewandowski has also been linked, as the Poland international looks to leave Bayern Munich, but Barcelona are firmly at the head of the queue for the experienced striker.
The Portuguese netted 18 times in 30 Premier League appearances, while he also found the back of the net on six occasions in seven Champions League outings.
Man United also continue to be linked with a new centre-back, while another goalkeeper will be required if Dean Henderson leaves the club amid interest from Nottingham Forest.
The 20-time English champions will be back in pre-season training later this month, while their first friendly of the summer will be against bitter rivals Liverpool on July 12. body check tags ::