Ronaldo is fed up at Real Madrid'

The Portuguese has been linked with a move to Manchester United next year and former president Ramon Calderon has fanned the flames of speculation

Former Real Madrid president Ramon Calderon claims Cristiano Ronaldo has become "fed up" with life at the club.

The prolific Portugal forward moved to the Spanish giants from Manchester United in 2009 and has since won a Liga title, the Champions League and the Copa del Rey twice.

Ronaldo has become the club's talisman over the past five years due to his phenomenal goalscoring record, but Calderon has launched his latest attack on the man who replaced him at the Santiago Bernabeu, Florentino Perez, by suggesting Ronaldo has become disillusioned under his reign.

Key men Xabi Alonso and Angel Di Maria both moved on in the summer and, although Madrid have recruited world-class replacements in Toni Kroos and James Rodriguez, Calderon believes the Ballon d'Or winner is unhappy with the departures.

"My impression is he is fed up with the policy of the current president," Calderon told Talksport.

"When he came to Real Madrid with Arjen Robben he thought he would be a good colleague for him in the team but then Robben was sold.

"Two years ago it was Gonzalo Higuain sold and he didn't like that. Last year he thought it was a mistake to let Mesut Ozil leave and the last straw was selling Xabi Alonso and Angel Di Maria this summer."

Rumours have been prevalent since the summer transfer window closed that Ronaldo could be tempted to join either former club United or rivals Manchester City should he opt to call time on his career at Santiago Bernabeu.