Napoli president Aurelio De Laurentiis says he will not sack Carlo Ancelotti if the Serie A side miss out on Champions League qualification.
Ancelotti's team will qualify from Group C if they avoid defeat at last season's finalists Liverpool on Tuesday, or if they lose and Paris Saint-Germain are also beaten at Red Star Belgrade.
PSG need a win to guarantee their own progress but will also be through if Liverpool fail to beat Napoli.
Although Napoli are second in the Serie A table having won four of their last five games, they are already eight points behind leaders Juventus, who are hunting an eighth consecutive title.