The Australian skipper has secured 309 wickets in 71 five-day games with an stellar bowling average.
Australia's chief selector Bailey has confirmed that skipper Cummins will have a crucial role in the forthcoming England-Australia contest.
There were concerns that Cummins might sit out due to a stress fracture in his back that was still troubling him.
Earlier indications from the squad suggested no definitive call had been made regarding whether he would play, with the Test matches kicking off on 21 November in the WACA.
He revealed that the captain is progressing and remained hopeful about the prospects of taking part.
"We're aware that the clock is ticking and multiple considerations involved, aside from the physical problem, but other factors as well," the selector added.
"It's positive. [We are] really confident that he'll participate in a significant role. With luck from the opening match. Should that not happen, we'll adjust."
Injury History
He was sidelined the white-ball matches against both Asian and Trans-Tasman rivals last month after medical tests showed a lumbar bone stress.
He has a history of spinal problems, with flare-ups in multiple past seasons leading to absences from three Australian summers in a limited period.
Cummins stated he would be proactive in his approach in his comeback strategy to ensure his availability for the Ashes.
The selector indicated that it was unclear if Cummins had begun bowling as part of his rehabilitation but acknowledged it was "pressing" for him to recover fully for the initial match.
Alternative Arrangements
If he's unavailable, ex-skipper Smith will assume leadership.
Versatile player Green was withdrawn recently from the ODI lineup for their one-day international series against India as a safety move because of discomfort in his torso.
He labeled it as a "small issue and stated that he's scheduled to appear in the domestic first-class competition, so will be "in a good place to resume bowling."
"Extensive planning has gone into building out the plan for him to be available for the opening match as an dual-role player," Bailey explained.
"His involvement was limited to the starting games anyway. His aggressive style the bat in limited-overs, should it hinder progress for another day, the choice was made to approach this more conservatively."
Series Schedule
The Historic Rivalry
Spanning from late 2025 to early 2026
