Glenn Maxwell's hopes of reviving his Test career may be over after the all-rounder missed out on selection in Australia's much-changed squad for the Sri Lanka tour.
If Smith is ruled out, then the left-hand batter Travis Head will lead the squad as he is the vice-captain of the side.
Australia openers Sam Konstas and Nathan McSweeney were on Thursday named in the 'A' squad bound to India to play two four-day matches in Lucknow in September, with an eye on the Border-Gavaskar Trophy 2026-27.
With 539 scalps in 134 matches at an average of 30.39 and best figures of 5/39, Lyon is the seventh-highest wicket-taker in Tests and has 24 five-wicket hauls and five ten-wicket hauls.
India's Test stars flopped with the bat as the hosts folded for a lowly 194 in 52.5 overs in their first innings, on Day 2 of the unofficial second Test against Australia A.
India A left-arm spinner Manav Suthar picked up three wickets to leave Australia A reeling, on Day 1 of the second unofficial Test.
India A captain Shreyas Iyer has pulled out of the second unofficial Test against Australia A starting in Lucknow on Tuesday because of personal reasons.
India wicketkeeper-batter Dhruv Jurel, who played in the fifth and final Test at The Oval against England in their last assignment, has been named Iyer's deputy.
Flamboyant keeper-batter Ishan Kishan walked into the middle and he looked in the mood as he played some impressive shots, including pulling O'Neill for a six.
A six-wicket haul from pacer Mukesh Kumar helped India A stay in the hunt during their first unofficial Test against Australia A at Mackay, Australia on Friday.
Selectors will likely opt for another batter to cover for all-rounder Green in the India series and possibly an opener if Steve Smith is restored to the number four spot.
The outings of Abhimanyu Easwaran, Nitish Kumar Reddy and Prasidh Krishna will be the primary focal points of India A's four-day match against their Australian counterparts
