What team has been around for longer, Societa Sportiva Calcio Napoli or UEFA Champions League?
2016–17 UEFA Champions League The 2016–17 UEFA Champions League was the 62nd season of Europe's premier club football tournament organised by UEFA, and the 25th season since it was renamed from the European Champion Clubs' Cup to the UEFA Champions League.
1999–2000 UEFA Champions League The 1999–2000 UEFA Champions League was the 45th season of the UEFA Champions League, UEFA's premier European club football tournament, and the eighth season since its rebranding from the "European Champion Clubs' Cup" or "European Cup". The competition was won by Real Madrid, who clinched a historic eighth title win by beating fellow La Liga side, Valencia in the final. The final was hosted in the Stade de France in Paris, the city where the original roots of the competition had begun nearly 50 years earlier.