While De Laurentiis said Jorginho's transfer was sanctioned after discussions with Napoli's new manager Carlo Ancelotti, he accused Sarri of trying to take more of Napoli's players to Chelsea.
"He wanted to take my whole team to England and dismantle it. I had to lay down the law to Marina (Granovskaia, Chelsea director)," De Laurentiis told Sky Sports Italia.
"He wanted Jorginho and I gave him away after I talked to Ancelotti, who told me he was banking a lot on (Amadou) Diawara and that he wanted to play (Marek) Hamsik deeper."
Sarri will lead FA Cup holders Chelsea in his first competitive match in charge against league champions Manchester City in the Community Shield on Aug. 5.
The London club open their league campaign against Huddersfield Town on Aug .11.
(Reporting by Aditi Prakash in Bengaluru; Editing by Toby Davis)
