Fergie believs the duo have become the players United always hoped they would be.
“Unbelievable performances,” he told Sky Sports News when asked about Rooney’s recent form.
“Hopefully we are now seeing him mature into the centre-forward we always thought he would be.
“Young players develop in stages. I said last season that he was producing bursts here and there, scoring for four or five games and then having dry spells.
“But that’s what you expect from maturity. I think we are now seeing a more mature player.”
“In the case of Nani, like Rooney, I think we are seeing a player who is maturing,” said Ferguson.
“He’s a young lad who has come in from a different country and he has taken more time than some of the others to settle. But that sometimes happens.
“Sometimes you bring a player in from another country and they settle straight away, but with Nani you can see his progression over the last few games because he has been outstanding.”
He added: “It’s got nothing to do with Cristiano, it’s an individual thing. He is maturing and he has got the appreciation from his team-mates, which is helping him.
“As a kid he always had great talent but he has taken time to settle into the country.”