The pace bowler has taken 309 Test scalps in 71 Test matches with an stellar bowling average.
Australia's chair of selectors Bailey has declared that skipper Cummins will have a crucial role in this winter's historic rivalry.
Rumors had circulated that the 32-year-old might sit out due to a stress fracture in his back that was still troubling him.
Initial reports from team management suggested no final decision had been made regarding Cummins' participation, with the Test matches scheduled to begin on the 21st of November in Perth.
Bailey expressed that Cummins is "building up" and remained hopeful about the prospects of being involved.
"It's clear that the clock is ticking and various factors around that, not just his injury, but additional elements," the selector added.
"It's positive. We firmly believe that he'll participate in a significant role. Hopefully from the opening match. Should that not happen, then we'll pick it up."
Past Concerns
Cummins was ruled out Australia's limited-overs series against New Zealand and India in the previous weeks after scans revealed a stress reaction in his back.
Previous incidents include of spinal problems, with flare-ups in multiple past seasons forcing him out of multiple domestic campaigns in four years.
Cummins stated he would be bold in recovery efforts in his comeback strategy to secure his spot for the series.
He mentioned that it was unclear if the captain had resumed bowling as part of his recovery but acknowledged it was "pressing" for him to recover fully for the opener.
Contingency Plans
Should Cummins not be fit, ex-skipper Smith will assume leadership.
Versatile player Green was withdrawn recently from Australia's squad for their ODI contests against the Asian giants as a safety move because of soreness in his side.
He labeled it as a "slight concern and stated that Green will play in the state-level matches, so will be "ideally positioned to be ready to bowl."
"Considerable effort has gone into building out the plan for him to be available for the opening match as an dual-role player," he elaborated.
"Originally, he'd only feature in the initial matches in any case. His aggressive style the willow in shorter formats, even if it just sets him back for another day, we opted to take a cautious route."
Fixture Details
Australia vs England: The Ashes
Spanning from late 2025 to early 2026
