Former AC Milan coach Arrigo Sacchi has offered advice to his old team ahead of their clash with Juventus.

Sacchi says Cristiano Ronaldo will be the key to Sunday's game.

He explained: “The way to mark Ronaldo is with the team. When my Milan played against Diego Maradona's Napoli, I told them the important thing is to ensure he doesn't see much of the ball, certainly less than he's accustomed to.

“That is why pressing is the only way to achieve a result here.

"You must cut off the supply to Cristiano, take him out of the game, because he is a terminal for all their moves."