The 30-year-old was booed during the defeat to Barcelona and with Louis van Gaal having revealed his interest in signing the Portuguese, could he be on his way out?

GOALCOMMENT By Sam Marsden 
Cristiano Ronaldo has said he'll retire in four or five years and he'll "live like a king". You won't find many people who would contest that, but there are an increasing number of doubts surrounding where the Portuguese will be when he does eventually decide to bring to an end a career laced with goals - especially with Manchester United and Paris Saint-Germain lurking.

Jorge Mendes, Ronaldo's agent, and his co-star in his recently released biopic, says he'll still be at Real Madrid when his playing days come to an end. Florentino Perez, Madrid's president, toldCadena COPE earlier this season that Madrid's all-scoring, all-conquering No.7 is only available for his release clause - €1 billion.

But what about Ronaldo? Where does he think he will be when the day arrives that he has to hang his boots up? In fact, where does he think he will be next season?



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BOO BETTER BELIEVE IT! Ronaldo jeered in Madrid
"As I say many, many times, the future nobody knows," Ronaldo recently told the BBC. "At this moment I'm so glad and happy here in Real Madrid, but the future nobody knows." Very non-committal.

And what about glad and happy in Madrid? As Los Blancos were humiliated by Barcelona in the Clasico at the weekend, the Portuguese looked far from content. In fact, he looked about as content as those supporters inside the Bernabeu who decided the club's all-time top goal scorer was not above being booed.

That's right. Amid the white handkerchief waving and the chants for Perez to resign as president, Madrid's fans turned on Ronaldo. It's not the first time and it seems unlikely to be the last, but it could prove to be the first day of the end of the 30-year-old's spell in the Spanish capital.

It's not as if he doesn't have enough on his plate at the moment. For a start, reports suggest his relationship with Rafael Benitez is on the rocks - if it was ever off them - with the Spaniard forced to deny suggestions Ronaldo, along with Sergio Ramos and Marcelo, had complained about Madrid's playing style in a summit meeting.

And things hardly got off on the right foot, with the former Liverpool boss refusing to name Ronaldo as the best player in the world on his first appearance in front of the media as Carlo Ancelotti's successor. It's fair to say it's been downhill from there.

We don't know - nor may we ever - just how serious the strain is on their relationship, but given the weight and column inches dedicated to the soap opera in Spain, there at least seems to be some sort of credence to the idea that the two don't get on. Reports last week suggested he'd told Perez Madrid "will win nothing" with Benitez.

Although that has nothing to do with why Madrid's fans jeered him. They jeered him because of a perceived lack of form - which could, in truth, be in part down to Benitez's tactics.