Athletic Bilbao coach Ernesto Valverde has ducked questions over Cristiano Ronaldo's form.

Athletic meet Real Madrid this weekend.

Valverde said, "Best not to say too much for risk of annoying him.

"Cristiano can score three or four goals each game. It's perfectly normal for anyone to have ups and downs during a season. But in the effectiveness stakes, I don't see him wavering at all.

"When you are up against him he looks dangerous any time he gets the ball."