Seven nations have already qualified for the 2017 Confederations Cup and they are hosts Russian Federation, 2014 FIFA World Cup Champions Germany, 2015 Copa America Champions Chile, 2015 AFC Asian Cup Champion Australia, 2015 CONCACAF Gold Cup winners Mexico, 2016 UEFA Euro Cup winners Portugal and OFC (Oceania Football Confederation) Nations Cup winners New Zealand.
"It's exciting", Postecoglou said from Russian Federation, where he attended the draw in Kazan on Sunday morning (AEDT).
Russia, also staging the 2018 World Cup, will play the tournament's first game on June 17 against New Zealand in the city of St Petersburg.
If Australia manage to do that, they will then get a minimum of two extra games - either the final or the third and fourth place play off.
The South Americans were one of the opponents in Australia's last World Cup campaign, defeating the Socceroos 3-1.
New Zealand qualified by winning this year's Oceania Nations Cup tournament in Papua New Guinea.
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The Socceroos are familiar with Chile, having faced them in the group stage of the 2014 FIFA World Cup, in Brazil.
The importance of Paul Aguilar's stunning goal to win the CONCACAF Cup against the United States in October 2015 may have initially gone unnoticed wrapped up in the emotions of the rivalry, but now that the draw for next June's Confederations Cup has been made, its worth is very clear.
That's because the 2022 World Cup in Qatar will be held in November and December, meaning the Confederations Cup would cause severe disruption to the club calendar if held in its traditional slot a year before the bigger tournament.
The tournament begins just two weeks after the Champions League final, running from June 17 to July 2 and will be the fourth consecutive summer in which Sanchez has been involved in worldwide football.
Infantino said Federation Internationale de Football Association officials are discussing questions such as "Shall we play it in June?"
"For us it's priceless, apart from the World Cup and Asian Cups, it's another way we can play in a major tournament".