Cristiano Ronaldo admits he would find it impossible to turn out for Manchester City because his heart still belongs to United .
The Portuguese superstar spent six years at Old Trafford prior to making a record-breaking switch to Real Madrid in the summer of 2009.
Ronaldo has enjoyed four goal-laden years in Spain, but speculation regarding his long-term future at Santiago Bernabeu has intensified this season.
Few clubs could afford to acquire his talents, but reigning Premier League champions City are among a select group of clubs who possess the riches required to make a deal happen.
Ronaldo has, however, attempted to bring an end to the rumors suggesting he could return to Manchester in blue rather than red.
Ahead of Real's Champions League clash with United on Wednesday, Ronaldo told The Sun: "To play for City not United? I'm not going to do that. Why? Because my heart's in Manchester United, that's why.
"I can say it would be very difficult to play at Manchester City. Ver...