ROME (AP) — There are still streamers and banners hanging over the city’s streets and piazzas celebrating Napoli’s Serie A title two seasons ago. Now there might be another championship to celebrate.

S.S.C. Napoli were formed in 1926 and, since 1959, the club has played their home games at Stadio San Paolo, which holds 54,726. The club have won two league titles, six Italian Cups, and one UEFA ...