Last Updated: Wed, 13 Feb 2013 13:50
Real Madrid's Cristiano Ronaldo insists he could never play for Manchester City due to his Manchester United past.
The Portuguese star spent six years at Old Trafford before securing an £80million transfer to the Bernabeu in 2009.
There has been speculation that Ronaldo has grown unhappy and frustrated in Madrid and would be open to a summer move.
City are one of a handful of clubs in world football who could afford to sign the 28-year-old and have been linked with a swoop for Ronaldo on a number of occasions.
However, Ronaldo has stressed he could not move to the Etihad Stadium due to his ties to United and moved to downplay speculation he is seeking to leave Los Blancos.
"To play for City not United? I'm not going to do that. Why? Because my heart's in Manchester United, that's why," Ronaldo told The Sun.
"I can say it would be very, very, very, very, very, very, very, very, very, very, very, very difficult to play at Manchester City. Very difficult because of Manchester United."
He added: "I am a player of Real Madrid and I'm happy here, my family is happy and everything is going well for me here. The future? I don't know - only God knows the future."
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