The Australian skipper has secured 309 wickets in 71 appearances with an impressive average.
Australia's selection chief the selector has stated that captain Pat Cummins will be a central figure in this winter's England-Australia contest.
Rumors had circulated that the 32-year-old might sit out due to a ongoing back issue that was still troubling him.
Previous updates from team management suggested no official announcement had been made regarding Cummins' participation, with the five-Test series set to start on November 21 in Western Australia.
Bailey expressed that Cummins is "building up" and was "optimistic" about the likelihood of participating.
"It's clear that the window is narrowing and there are permutations around that, not only the physical problem, but other factors as well," Bailey remarked.
"It's positive. There's strong faith that he's going to play a significant role. Ideally from the opening match. Should that not happen, we'll reassess."
Past Concerns
Cummins was ruled out the white-ball matches against both Asian and Trans-Tasman rivals recently after examinations confirmed a lumbar bone stress.
There is a track record of spinal problems, with setbacks in multiple past seasons leading to absences from several home seasons in a short span.
He emphasized he would be ""aggressive" and "take risks" in his comeback strategy to ensure his availability for the series.
He mentioned that it was unclear if he had started his bowling workouts as part of his rehabilitation but acknowledged it was "pressing" for him to be fit for the initial match.
Contingency Plans
Should Cummins not be fit, former captain Steve Smith will assume leadership.
The talented all-rounder was recently pulled out from Australia's squad for their ODI contests against the Asian giants as a precautionary measure because of an abdominal issue.
Bailey described it as a "minor" injury and mentioned that he's scheduled to appear in the domestic first-class competition, so will be "well-prepared to be ready to bowl."
"Extensive planning has gone into creating the schedule for him to participate for the opening match as an all-rounder," he elaborated.
"He was only going to play the starting games in any case. His aggressive style the willow in shorter formats, should it hinder progress for 24 more hours, we just made the decision to adopt a safer strategy."
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