Napoli president Aurelio de Laurentiis is offering bonuses to the players to finish in second place.
The Azzurri defeated Juventus 2-0 on Sunday.
ADL revealed: "I thanked the guys, telling them 'if you play like this, we can do it'. I told them that I will give them a bonus if we finish second.
"And I was talking to Pepe Reina, who has agreed, and then I said to the goalkeeper: 'You will have to stay too!'"