Manchester United have agreed to pay a massive £17million for Anderson, 19, while Nani, 20, is a £14m capture.
And Ronaldo, 22, is convinced the young guns will justify their price tags by taking the champions up another level.
He said: “I can only say that United will be stronger because they have signed two great players.
“Anderson and Nani are phenomenons and the side will be improved a lot by their participation.”
Nani and Anderson have both agreed five-year United deals, which will earn each player £26,000 a week as they bid to follow Ronaldo to stardom.
United boss Alex Ferguson will look to Portuguese wing king Ronaldo to be a mentor for the new boys, who, like Ron, are without their fathers.
Ronaldo was devastated when his dad passed away in 2005, while Anderson’s father died five years ago and Nani has not seen his for years.
Nani’s mother Maria do Ceu was left alone to raise him and his EIGHT brothers after her husband went home to the Cape Verde Islands on holiday 15 years ago and never returned.
And Ronaldo has already vowed to make sure Anderson and Nani feel right at home alongside him with their new United family.
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