Ronaldo will come face-to-face with the Red Devils in the sides' Champions League last-16 tie on February 13.

The Portuguese international scored 84 times in 196 appearances for United before moving to Spain on a much larger wage, but says he still thinks fondly of the Old Trafford fans.

"I have a lot of warm feelings for a team that has meant a lot for me in my career," Ronaldo said.

"The people that are there know that and I have many friends and I think fondly of the fans, but I play for Real Madrid now and I have to win and give my best for this club.

"I'll try to give my best, but with the feeling of playing against a team that I really like."