The two clubs are in the same Champions League group.
"We have a hard group," he told reporters. "I believe that any of the teams could qualify.
"Among these are Napoli - I think they are more or less at our level. Benitez is doing a wonderful job.
"He has some very good players in his squad.
"I believe that can fight with Juventus for the Scudetto."
For the big stories and the banter follow us on Twitter: @tribalfootball