Socceroos coach Tony Popovic named Italy under-21 international Cristian Volpato in his 26-strong squad for the World Cup on Monday after he switched allegiance to Australia last week.

The 22-year-old attacking midfielder, who was born and raised in Sydney and plays for Sassuolo in Serie A, is one of two uncapped players along with Japan-based striker Tete Yengi.

The squad is led by veteran goalkeeper Mat Ryan after a standout season with La Liga side Levante.

He will be at his fourth World Cup, as will Melbourne City forward Mathew Leckie.

Seventeen players will be at the global showpiece for the first time.

"Some difficult decisions had to be made -– that's the nature of major tournaments," said Popovic.

"But it's also a credit to all the players involved over the....