Sir Alex Ferguson's side still harbour ambitions of retaining their Premier League title not to mention reclaiming the Champions League crown.
First of all though there is the small matter of an FA Cup fourth-round clash against Tottenham at Old Trafford.
"That is fantastic for us. Now we have a good chance in the league, the Champions League and the cup.
"We have a very good team and confidence is high among the players."
Ronaldo is also excited that Paul Scholes is on his way back following a three-month absence after a knee operation.
The former England midfielder could be on the bench in the fourth round game.
Ronaldo said: "He is a fantastic player - a key player in many games. He helps the team a lot.
"You learn many things from him as he is a mature player and has been at United a long time.
"It is always fantastic to play alongside someone of his quality."
United prepared for the cup clash with a four-day break in Saudi Arabia where they played in a testimonial match last Monday.
He said: "It has been a different week but a good one in some ways. We played one game and trained twice.
"If you can beat them 5-1 then you come to Manchester with a lot of motivation.
"But we have a good spirit and as we are at home it is important to please our supporters.
"We are playing some attractive football. We do not want to lose to Tottenham and go out of the cup."