The pace bowler has secured 309 wickets in 71 five-day games with an stellar bowling average.
Australia's selection chief the selector has declared that skipper Cummins will have a crucial role in the forthcoming Ashes series.
There were concerns that the veteran bowler might sit out due to a persistent back stress problem that was still troubling him.
Previous updates from the squad suggested no final decision had been made regarding whether he would play, with the Test matches set to start on 21 November in the WACA.
He revealed that his recovery is on track and felt positive about the likelihood of participating.
"We're aware that the clock is ticking and multiple considerations around that, not only his injury, but other factors as well," Bailey remarked.
"We're encouraged. There's strong faith that he's going to play a key capacity. Ideally starting in Perth. If not, we'll adjust."
Injury History
The captain missed Australia's limited-overs series against New Zealand and India in the previous weeks after examinations confirmed a stress reaction in his back.
He has a history of recurring issues, with flare-ups in 2012-13, 2013-14 and 2015-16 leading to absences from several home seasons in a limited period.
The bowler mentioned he would be bold in recovery efforts in his recovery plan to secure his spot for the contest.
He mentioned that he did not know if he had started his bowling workouts as part of his comeback but admitted it was "pressing" for him to recover fully for the initial match.
Backup Options
In case of absence, veteran batsman Smith will take over the captaincy.
Versatile player Green was withdrawn recently from the ODI lineup for their limited-overs matches against India as a safety move because of an abdominal issue.
The selector characterized it as a "minor" injury and mentioned that he's scheduled to appear in the Sheffield Shield, so will be "well-prepared to deliver overs."
"Extensive planning has gone into developing the strategy for him to be available for the opening match as an all-rounder," he elaborated.
"He was only going to play the starting games regardless. How he handles the cricket bat in white-ball cricket, even if it just sets him back for a short period, the choice was made to approach this more conservatively."
Fixture Details
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