The pace bowler has secured 309 Test scalps in 71 five-day games with an average of 22.10.
Australia's chair of selectors Bailey has stated that skipper Cummins will have a crucial role in the upcoming Ashes series.
Speculation had been growing that the 32-year-old might be unavailable due to a stress fracture in his back that remained unresolved.
Previous updates from the squad suggested no final decision had been made regarding his involvement, with the extended contest scheduled to begin on November 21 in the WACA.
The selector shared that the captain is progressing and felt positive about the likelihood of participating.
"It's clear that time is getting short and multiple considerations around that, not just his injury, but other factors as well," he commented.
"The outlook is good. We firmly believe that he will feature a major part. With luck it's the first Test. Otherwise, then we'll pick it up."
Past Concerns
Cummins was ruled out the ODI and T20 games against New Zealand and India last month after scans revealed a stress reaction in his back.
Previous incidents include of spinal problems, with setbacks in several earlier campaigns leading to absences from several home seasons in a limited period.
He emphasized he would be bold in recovery efforts in his recovery plan to secure his spot for the contest.
Bailey noted that he did not know if he had started his bowling workouts as part of his recovery but acknowledged it was "getting tight" for him to recover fully for the first Test.
Contingency Plans
If he's unavailable, veteran batsman Smith will take over the captaincy.
Versatile player Green was excluded lately from Australia's squad for their limited-overs matches against the subcontinent side as a precautionary measure because of an abdominal issue.
Bailey described it as a "minor" injury and mentioned that he'll feature in the state-level matches, so will be "ideally positioned to resume bowling."
"We put so much time has gone into building out the plan for him to participate for the first Test as an batting and bowling option," the selector detailed.
"Originally, he'd only feature in the initial matches in any case. His aggressive style the willow in shorter formats, should it hinder progress for a short period, we opted to take a cautious route."
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