MILAN - Davide Massa is the designated referee for Napoli-Milan on Saturday evening.He’ll be assited by Filippo Meli and Lorenzo Manganelli with Gianluca Vuoto as Fourth Official. Antonio Damato and Domenico Celi will be behind the goals.Massa has refereed Napoli only once before in a match which the Azzurri won. He has 3 precedents with Milan numbering 2 wins and a draw.