Real Madrid chief Zinedine Zidane has warned Manchester United and Chelsea off Cristiano Ronaldo.PSG have also been linked with the Portuguese superstar.

"Ronaldo is happy at Madrid," said Zidane, who is to be appointed as Real's sporting director after leaving last year amid rumours of an apparent disagreement with outgoing manager Jose Mourinho, to L'Equipe.

"He is very important for the team and will not move to a different club next season."