Bowling his second spell of the day, the 21-year-old was unable to react in time when Bumrah’s full blooded drive slipped through his palms and struck on the right side of the head.
The all-rounder immediately went down and non-striker Mohammed Siraj rushed to check on him.
After being examined for a couple of minutes by the medical team, the all-rounder was back on his feet as he walked off the field for further assessment. Batsman Patrick Rowe was named his concussion substitute.
“Cameron sustained a mild concussion while bowling for Australia A. This is Cameron’s first concussion. He has returned to the team hotel and will not play the remaining two days of the tour match,” Cricket Australia’s team doctor, Pip Inge was quoted as saying by ‘ESPNCricinfo’.
“We will continue to monitor him and provide an update on his condition in due course,” Inge added.
Green is primed for a Test debut after scoring an unbeaten 125 for Australia A in their first practice match against India, which ended in a draw on Tuesday.
In the second game he returned with figures of 1/20 in the 6.1 overs, taking the crucial wicket of Shubman Gill.
Earlier this week, Australian batsman Will Pucovski suffered a concussion after being struck on the helmet by pacer Kartik Tyagi during the first warm-up game.
Opener David Warner has already been ruled out of the first Test due to a groin injury suffered during the second ODI.
The much anticipated four-match Test series is slated to begin with a Day/Night game in Adelaide from December 17.