The European League is not the main reference for big teams, they don't even look serious about winning three points, this can be seen when I bet last night that almost all the big teams from Tottenham, Napoli to Leicester City failed to get the full three points. Even though Napoli obtained good results last week when they beat AS Roma with a score of 4-0 but failed to win last night and resulted in me losing the bet choosing Napoli. In the future, we prefer only small teams as winners because some of the core players are always reserved to give opportunities to the reserve players.
It is something usual for the English teams as the do not have a lot of income from Europa league compared to the one that they can get from a good season in Premier league thus they do not try hard in the European games.
However, we cannot say the same for Italian teams and especially for Napoli. They played badly yesterday and this was the clear reason about not getting those three points. Good for them they are still on No.1 position on the group.