Young batting sensation Sam Konstas is all set to make his Test debut on the Boxing Day Test. He will become the 468th Australian men's Test player.

Sam Konstas 
Sam Konstas will become the fourth youngest ever to make Test debut with only Ian Craig, Aussie captain Pat Cummins, and Tom Garrett making their debuts at a younger age.

"We said from the get go, when leading into the summer, that we wouldn't shy away, and age was no barrier," McDonald said. And what he's shown is an array of shots, the ability to put pressure back on to opponents and he gets his opportunity. We're really excited for him."

However, Aussie talismanic batter Travis Head is under injury cloud and he needs to undergo fitness Test. But Aussie head coach Andrew McDoland is confident on Travis Head's availability for the crunch Test.

"Has he got some things to work through? Yeah, he has," McDonald said. "So that's what you would have seen. There's no concern at the moment. Has he been officially ticked off? I'm not sure. I didn't see the sort of back-end of his training session there, but I'm pretty confident he'll play.

"I think he looked good with the bat in hand so obviously skills are in good order. Yeah, it'll just be basically what risk is associated with that. He had a small strain to the quad.
"But no concerns from my end. He's been able to be running, yeah, so I think he'll be fully functional come the game time."

Also it is sure that Scott Boland will replace injured Josh Hazlewood in their playing XI. McDoland also gave clarity on Mitchell Marsh and said he's fully fit to bowl.

"Just to clear up, Mitch Marsh is fully fit and available to bowl," McDonald said. "I know that he only bowled two overs last game, and people were speculating around that, but that was more because of the weather interventions, and we're able to keep our fast bowlers fresh, albeit we only had two out of the three operating. But he's ready to go, and I think he'll play a role in this Test match with the ball more so than the previous ones."