The Portuguese forward left United to join Real for a then-world record £80m in 2009.
Ronaldo has already been linked to a move away from the Santiago Bernabeu
The Ballon d'Or presenter lifted the lid on what happened behind the scenes
Ronaldo was jeered after missing a few chances during the 2-0 win over Roma, in which he scored the opening goal and laid on the assist for the second
Ronaldo has claimed he didn't speak to his United team-mates off the pitch after being quizzed about the relationship at Barcelona between Lionel Messi, Luis Suarez and Neymar
Barcelona’s three amigos were in the headlines this week thanks to their outrageous penalty - but Real Madrid forward Ronaldo isn't interested
The Real Madrid coach has offered an insight into where his allegiance lies
The former Manchester United forward has been linked with a return to Old Trafford
Ronaldo kicked opponents against Sporting Gijon and Real Betis
Documents released by website Football Leaks suggest that the former Tottenham Hotspur winger is the world's most expensive footballer
Real Madrid and Barcelona both romped to big wins in La Liga this weekend
Follow the latest transfer news and rumours with a number of Premier League clubs eyeing up big moves
Messi won, but who selected him?
Voting for the Ballon d'Or reveals how CR7 sees the pecking order at the Bernabeu
Barcelona and Real Madrid were each represented by four players
There's a good reason why the bookmakers' have made the four-time winner the favourite to win the Ballon d'Or this year