Australia were dealt a Bledisloe Cup blow on Wednesday when fullback Andrew Kellaway was ruled out of Saturday's clash against New Zealand in Auckland with a calf issue.
It means 21-year-old Max Jorgensen is in line to start at Eden Park.
"It's such a big game," Jorgensen said.
"If given the opportunity this week at the play-in, it would be a dream come true," Jorgensen added while speaking to reporters in Auckland on Tuesday.
"It's definitely a challenge, but it's an exciting one. I think for our group... to get the opportunity to play at Eden Park against a team like the All Blacks, it's always cool.
"They're a world-class team; they've always been good and always will be."
The Wallabies, who top the Rugby Championship by a point, will have to end two All Blacks' winning streaks to lift the Bledisloe Cup, which is contested annually between Australia and New Zealand.
New Zealand have not lost at Eden Park since 1994, going 51 matches unbeaten, and have held the Bledisloe Cup since 2003.
The All Blacks are coming off a record 43-10 loss to the Springboks in Wellington but have been bolstered by the return from injury of scrum-half Cam Roigard, hooker Codie Taylor and lock Patrick Tuipulotu.