The 22-year-old has represented his country on four occasions, starting against Bulgaria and Armenia during World Cup qualifying.
After impressing in Napoli's 2-0 win over Serie A leaders Juventus on Sunday, Insigne spoke of his eagerness to make Cesare Prandelli's squad for the global showpiece.
He told Sky Sport Italia: "I am giving my all with the Napoli jersey to reach my objective, which is the World Cup.
"Prandelli is tracking me, I am happy with these performances and hope in the end they will pay off."
The tricky attacker has been a regular feature in Napoli's first team this season, making 19 league starts and appearing from the bench on a further 11 occasions.
Pep Guardiola issues a very blunt answer when quizzed by reporters on latest accusation levelled against Manchester City
'I think my opinion is more important than Roy Keane's. I know as a captain he does things sometimes with his arms, criticising his team-mates, but most of all it's a bit of frustration.' - Ruben Amorim hits back in Bruno Fernandes row
