Napoli defender Raul Albiol can't see Cristiano Ronaldo matching his Real Madrid goalscoring feats with Juventus.

The €112m signing is yet to break is duck for Juve since his summer arrival.

Albiol, who played with Ronaldo at Real Madrid, admits he isn't surprised: "The arrival of Cristiano has had the effect of a bomb in Serie A.

"The championship is attracting much more interest now, and it's a good thing. But we must also remember that Italy has nothing to do with Spain.

"Here, it will be very difficult for him to score 40 goals a season."