Kalidou Koulibaly says Napoli's players believe they can achieve big things this season.

Maurizio Sarri's side face Atalanta this weekend.

“Napoli arrive in Bergamo with great confidence, we've been working for the last week after a bit of a holiday. We'll be ready on Sunday.

“We know we have to win on Sunday to stay top, every game from now until the end will be difficult.

“Atalanta are a strong team who play their system well and always cause us problems with their 3-5-2.

“We know what we have to do though, we know they always cause us problems so we'll go there to win, but fully aware of what we're facing - we want these important three points.

“We're aware we can do something big, but there's still a long road ahead, there are still 18 games to go.

“We'll think about them one-by-one and we'll give everything until the end."