The sister of Manchester United striker Cristiano Ronaldo has taken offence from comments by Real Madrid president Florentino Perez.

Perez was asked by fans in Helsinki this week about re-signing the Real Madrid great.

But the president ruled out the prospect, declaring: "He's 38 years old."

In response, Ronaldo's sister Katia posted to social media: "He is 38 years old, but he can still jump more than two metres, stay there for 3 minutes, and there is no fat in his body.

"Behave yourself, old man, you are 75…"