Napoli is one of the most inform team in the world at the moment,they have been very impressive for a number of games now,scoring a minimum of three goals per game they play.Every team will return to normal as the world cup gets to climax,and the leagues restarts again,players have started returning to their different clubs ,some of them returns with injury,while some of them comes back ohk.If Napoli will maintain this form till the season ends,we will see,while if they will loose form when the world cup gets over,we will still see,but I hope they remain in good shape so they can continue the good form they were in Before the world cup started.
Napoli have a very good coach, so far Spalletti has the best strategy to focus on defense so he always uses a 4-3-3 formation (we can see for ourselves). if they continue to maintain their good achievements like the past mid-season then the hopes of Milan and Juventus to catch Napoli have really vanished, Napoli have not been defeated, that is truly extraordinary.
He basically uses the midfield to cover for the centre back while the wing is out. Which means, they can use the wing backs as attackers, just like how liverpool does it, where trend goes high, same logic but here they use a defensive midfielder to get back to center back, and whichever side of the other team attacks, the center back goes bit towards there until wing back gets back to position to slow the opposition down.
This means they act as if they have 3 center backs, and that works very well for them so far, never lost a game. I assume that they will keep this up, but in order to do that they need to keep all their players until the season is over.