World Cup squad analysis: Arnie’s gamble on potential over proof

There’s no end of talking points among Graham Arnold’s 26-man Socceroos’ World Cup squad; Garang Kuol’s selection, Cristian Volpato’s decision, the omission of Tom Rogic, Trent Sainsbury, Adam Taggart and Mitch Langerak, plus the injury clouds. But one underlying theme among the squad is the deference for potential over proof. To explain that point, I’ll…