The Australian skipper has taken over 300 dismissals in 71 appearances with an average of 22.10.
The Australian chief selector Bailey has stated that pace spearhead Cummins will play a "major part" in the forthcoming historic rivalry.
Rumors had circulated that Cummins might miss the series due to a persistent back stress problem that had not yet healed.
Earlier indications from team management suggested no official announcement had been made regarding Cummins' participation, with the Test matches set to start on 21 November in the WACA.
Bailey expressed that the captain is progressing and felt positive about the prospects of being involved.
"We know that the window is narrowing and various factors at play, aside from his injury, but further aspects," the selector added.
"It's positive. We firmly believe that he'll participate in a key capacity. Ideally from the opening match. Otherwise, we'll reassess."
Injury History
He was sidelined the ODI and T20 games against India and New Zealand last month after scans revealed a lower back issue.
There is a track record of back injuries, with recurrences in multiple past seasons leading to absences from multiple domestic campaigns in a limited period.
Cummins stated he would be proactive in his approach in his rehabilitation process to make the squad for the Ashes.
Bailey noted that he did not know if Cummins had begun bowling as part of his recovery but admitted it was "becoming urgent" for him to regain fitness for the first Test.
Contingency Plans
If he's unavailable, former captain Steve Smith will lead the side.
Versatile player Green was withdrawn recently from Australia's squad for their ODI contests against India as a safety move because of discomfort in his torso.
Bailey described it as a "slight concern and mentioned that he's scheduled to appear in the Sheffield Shield, so will be "in a good place to be ready to bowl."
"Considerable effort has gone into developing the strategy for him to be available for the opening match as an batting and bowling option," Bailey explained.
"He was only going to play the first two ODIs regardless. His aggressive style the willow in shorter formats, should it hinder progress for a short period, we opted to approach this more conservatively."
Fixture Details
The Historic Rivalry
21 November 2025 - 7 January 2026
