The Uruguay international is a reported target of several top European clubs, including Manchester City, after another excellent campaign with the Serie A outfit.
Cavani was instrumental in Napoli's fifth-placed finish this season, scoring 23 goals in 35 league appearances.
"If we receive a mega offer for Cavani then I will not be able to hold back," De Laurentiis said to Gazzetta dello Sport.
"For now, no club has offered me the money I'm asking for."
Napoli slapped a 100million euros price tag on Cavani last year and the 25-year-old was strongly linked to Inter Milan, Chelsea and Paris St Germain.
The South American player is under contract with Napoli until June 2015.