Giorgio Chiellini has warned his Juventus team-mates not to underestimate the threat posed by Napoli in their Serie A clash on Friday.
Just six points separate the two sides going into their meeting at the San Paolo and the Italy international has been impressed with the Partenopei's rise in recent years.
"The match could go either way. It won’t be decisive because there is still a long way to go in the championship, but it will of course be important for both teams," Chiellini told Sky Sport Italia.
"Napoli have improved immensely. They have an ambitious president, and since [Walter] Mazzarri arrived, they’ve taken a further step up in quality.
"The club has not only become competitive in Italy, but also in Europe, as they showed last year over two legs against Chelsea."