Liverpool confirmed the signing of Salah on Thursday in a deal that could be worth €50 million, according to the Serie A side.
De Laurentiis said even broadcasters who have paid millions for TV rights do not like some of the fixtures they have to show.
Donnarumma has said he will not be extending his contract, sparking an angry reaction from some Milan fans.
Liverpool have completed the signing of Mohamed Salah from Roma.
Juventus director Giuseppe Marotta insists there are no hard feelings toward Dani Alves who has said he wants to leave.