"We'll call the police!" he said when asked how City will stop Ronaldo.
"He's a top player and he deserves to win the Ballon d'Or. He scored so many goals last year and that helped them to finish above Barcelona.
"I hope he can have a bad night on Wednesday. When you come up against a player who can score one or two goals every game it is difficult. If they leave Cristiano at home, it's better."
City are currently at the foot of Group D with just two points from four matches, while their visitors Madrid are second with seven points.