The clash with the All Whites, which will also be used to mark 100 years since Australia's first men's international match, will come three days before Australia travel to Auckland to face the same opponent at Eden Park on Sept. 25.
Arnold says no one should be in any doubt about the importance of both fixtures.
"There's three main parts to this," Arnold told AAP. "The first is that it's a hundred-year celebration for the Socceroos and that's an amazing thing for the players to be a part of.
"The second thing is it gives the fans -- and I'm appealing to all the Queensland fans and fans across the country to get Suncorp for a farewell game, to say goodbye to the boys and show their great support.
"The third thing is there's no such thing as friendlies, especially against a rival such as New Zealand. It's up to the players and it's an opportunity for the players ... their last chance to show me what they've got. If someone comes out and stars in those games, well then there's a good chance they'll be selected."
Tony Gustavsson's team has already confirmed it will play the Olympic gold medallists in Sydney on Sept. 6.
The Socceroos' two matches against New Zealand will be part of Australia's warm-up for November's 2022 World Cup in Qatar.