Socceroos coach Tony Popovic says Daniel Arzani is a prime example of players who need to step up if Australia are to directly qualify for the World Cup.

Socceroos coach Tony Popovic says former boy wonder Daniel Arzani hasn't been good enough to earn a national spot, challenging the attacker to lift his standards.

In his most expansive interview yet since becoming national team boss, Tony Popovic has delivered some home truths to those dreaming of pulling on the green and gold.