Napoli are threatening to play their youth team in the second leg of their Coppa Italia semi-final against Juventus in protest at first-leg refereeing decisions.
Napoli lost 3-1 in Turin on Tuesday night after Juventus striker Paulo Dybala scored two second-half penalties.
The Naples club’s director Cristian Giuntoli described the performance of the referee Paolo Valeri as “shameful and damaging to all Italian football”.
Napoli have complained that the second penalty which were awarded to Juventus after Pepe Reina brought down Juan Cuadrado, was a wrong call.
Napoli feel television replays proved Reina touched the ball before the Colombia winger was upended.
They also believe they should have been awarded a penalty seconds earlier when Raul Albiol went down in the opposition’s penalty area.