The Scotland captain scored a superb goal as United beat Everton 3-0 at the weekend and has hinted that he may be able to get forward more often now that Ronaldo has left the club.
He told United We Stand: "Any team in the world would miss him. He is a fantastic player and a great goalscorer.
"He adapted so much when he was here. He went from being a silky winger to being a goalscorer winger and the best player in the world.
"Hopefully we can become a more rounded team and other players will raise their game to cover the gap left by his absence.
"We need more goals from midfield and more goals from all he players. That will make us a stronger team, because we won't be as reliant on one player.
"Much as Cristiano was brilliant for us, the team sacrificed a lot for him too. As a midfielder, I knew that I couldn't go bombing forward because Cristiano had gone forward.
"I knew that I had to cover on the right so that the left back and left midfielder couldn't double up on our full back. Maybe now we're a lot more rigid 4-4-2, with everyone knowing their role. There are perhaps more opportunities for midfielders to get in the box and get goals."