Arrival of Victor Osimhen could prompt Gennaro Gattuso to change the Napoli system to a 4-2-3-1.
According to the Corriere dello Sport, the 4-3-3 would not be suitable, because Dries Mertens is now too old to play entirely on the wing of a trident attack and would struggle with the extra work-load.
Instead, the coach is believed to be planning a 4-2-3-1 system with Mertens, Lorenzo Insigne and Eljif Elmas or Piotr Zielinski in support.
Napoli spent €50m plus €10m in bonuses and some youth team players to sign centre-forward Osimhen from Lille.
It made him the most expensive purchase in the club’s history.