Napoli coach Carlo Ancelotti is eager to see how his players are tested by Barcelona.
The first leg of the La Liga-Serie A Cup ended 2-1 to Barca in Miami, while the decider kicks off in Ann Arbor.
Ancelotti said, “The first match was very intense and I believe this will be the same. We played well, particularly in the first half, and will try to do it again. It'll be trickier this time, because Barcelona know us now and the way we play.
“Barcelona have a top level strike force, but I maintain it's the team that wins and not individuals, so all the champions have to learn how to play together.
“Some are a little further ahead in the pre-season process, while others just arrived and are working to improve."