I think ""Barcelona is not motivated enough to win the Europa league"" is just some baseless rumor and I obviously believe that Barcelona is going to give it their best to win the Europa League.
Barcelona needs to win the Europa League in my opinion because they need the money badly as they are in quite a big debt still. Napoli is a very hard opponent for this Barcelona squad but I think if Barcelona can play their level best they will be able to beat Napoli.
H2H refers that Barcelona is favorite over Napoli but Napoli is also a strong team. They have ability to beat Barcelona. Besides, Barcelona is not doing so well and their players are not in the form. I hope Barcelona will win this match.