The 36-year-old must show that "exceptional circumstances exist to justify modifying a sanction", including demonstrating remorse and evidence of improved behaviour.

The new rule "acknowledges that players and player support personnel are capable of genuine reform or rehabilitation".

"It is intended to provide the player or player support personnel with an opportunity to resume their previously held positions or responsibilities in specific circumstances," CA added.

Under the previous code of conduct, players had no right to review a sanction once it had been accepted.

Pat Cummins is currently Australia's Test and ODI captain and Aaron Finch skipper of the T20 side.

A lifting of Warner's ban would make him a prime candidate to take over the T20 captaincy should Finch step down, as he recently did from the 50-over format.

Warner would also be in the mix, alongside Steve Smith, Josh Hazlewood and Alex Carey, to deputise for Cummins or act as his vice-captain. It could also allow him to lead his Big Bash League side Sydney Thunder.

Warner was cast as the key villain in the "Sandpaper-gate" ball-tampering scandal against South Africa in 2018, having conspired with then-skipper Smith and Cameron Bancroft to alter the ball during the third Test in Cape Town.

Like Warner, Smith was also banned for a year but his leadership sanction only lasted two years.