This was explained at Radio Goal,
by Carmine Martino, journalist in Mediaset.
Here’s what he said: “I still remember the performance post-Champions League in Bergamo against Atalanta, defining it sad is little. Even the footballers remember that match. I think there will be turnover. The roster is wide and footballers are all available. I expect at least 3 or 4 new footballer on the pitch, compared with the match in Lisbona. But no one in attack .”
And about the hate by the Cagliari’s supporters for the Napoli team: “With Cagliari there is an old rivalry. At the San Paolo stadium, in occasion of a playoff match between Cagliari and Piacenza, the Neapolitan supportes cheered Piacenza. Napoli will have to play to the maximum against a team that is expressing good football.”