Mazzarri comes off contract in June.
De Laurentiis said: "If even Mazzarri were to leave, then we'll still have a great squad. I won't swap Mazzarri for anyone, but it depends only on him. Mazzarri might change President, but I won't change Mazzarri for another Coach.
"I chose him and have been working with him very well for many years. If he is fed up and wants to take a break or go for another experience, then that is purely his decision."