Tomorrow is one of the big and important match  in Serie A Napoli have the chance to knock Inter off the table and it can happen because Napoli are playing at home
On the other hand Napoli are on fire for 4 consecutive wins while Inter are in a difficult situation because they have to play in the Champions League the next 4 days
the effect is that Inter cannot play fully against Napoli because it is at risk against Liverpool in the UCL.