Sarri has agreed a provisional two-year deal worth £5.5million a season with Chelsea with an option to extend to a third year.
Even though Napoli have replaced Sarri with former Chelsea Chelsea boss Carlo Ancelotti, the Italian club are still holding out for a £7million release clause in Sarri’s contract.
Chelsea are hoping to pay less but Napoli president Aurelio De Laurentiis has warned Chelsea that he doesn’t do discounts.
“I don’t give anyone discounts and no-one has called me about the clause in Sarri’s contract,” De Laurentiis said as quoted on Daily Express.
“This was a clause put in his contract when it was renewed and his salary increased – so now it is going to be paid.
“I have to defend our fans. The clause defends my choices.
“When I modify a contract, it is with agreement. I inserted the clause, and it has to be honoured. Now the clause is not valid? I don’t like this one-sided idea.”
The deadline on the clause though runs out on Thursday.