Shaun Marsh is in the box seat to replace Chris Rogers, whether it be for the third Ashes Test or after the series.
Marsh retired on 101 against Derbyshire on Thursday, his second century on Australia's tour of England.
Rogers remains in doubt for the third Test, which starts on Wednesday at Edgbaston.
The veteran opener is undergoing more tests to assess his balance issues, with team doctor Peter Brukner expected to provide an update on Friday.
Marsh filled in for Rogers at the top of the order when the 37-year-old missed two Tests in the West Indies due to concussion.
If Rogers is sidelined again, Marsh has confidence and some serious form in local conditions.
"My mindset over the last couple of weeks is making sure I'm ready to go if there's an opportunity," Marsh said.
"With every opportunity I get to play for Australia, whether it's a Test match or tour match ... I'm just making sure I'm ready to go and doing everything I can to score runs."
Even if Rogers is passed fit, he is set to retire at the end of the Ashes.
That will provide Marsh a perfect opportunity to nail down his spot in the Test XI.
"You don't want to look too far ahead. You keep your mind in the present," the Western Australian said.
Marsh admits he was chomping at the bit to get on the park again, having sat on the sidelines since making an impressive 114 against Kent a month ago in Canterbury.
"It was nice to get in a game situation," he said.
"It was nice to get some runs ...as my innings went on I got better.
"I feel really comfortable with my game at the moment."
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