Napoli's Scott McTominay, left, celebrates after scoring during the Serie A soccer match between Napoli and Empoli at the Diego Armando Maradona Stadium in Naples, Italy.

Napoli's Romelu Lukaku celebrates after scoring during the Serie A soccer match between Napoli and Empoli at the Diego Armando Maradona Stadium in Naples, Italy.

Napoli's Romelu Lukaku, centre, celebrates after scoring his side's second goal during the Serie A soccer match between Napoli and Empoli at the Diego Armando Maradona Stadium in Naples, Italy.

Napoli's Juan Jesus, right, challenges for the ball during the Serie A soccer match between Napoli and Empoli at the Diego Armando Maradona Stadium in Naples, Italy.

Napoli's Scott McTominay, center right, during the Serie A soccer match between Napoli and Empoli at the Diego Armando Maradona Stadium in Naples, Italy.

Napoli's David Neres during the Serie A soccer match between Napoli and Empoli at the Diego Armando Maradona Stadium in Naples, Italy.

Napoli's Pasquale Mazzocchi, centre, heads the ball during the Serie A soccer match between Napoli and Empoli at the Diego Armando Maradona Stadium in Naples, Italy.

Napoli's Romelu Lukaku, left, and Empoli's Mattia Viti challenge for the ball during the Serie A soccer match between Napoli and Empoli at the Diego Armando Maradona Stadium in Naples, Italy.

Napoli's Billy Gilmour shoots the ball during the Serie A soccer match between Napoli and Empoli at the Diego Armando Maradona Stadium in Naples, Italy.

Napoli's Scott McTominay, left, and Empoli's Liam Henderson challenge for the ball during the Serie A soccer match between Napoli and Empoli at the Diego Armando Maradona Stadium in Naples, Italy.