Test hopeful Cameron Green suffered concussion after being struck on the head in a tour game against India on Friday as Australia's preparations for the four-Test series against the tourists suffered another jolt at the Sydney Cricket Ground.

The 21-year-old all-rounder, playing for Australia 'A', was bowling to Jasprit Bumrah, who smashed a drive straight through Green's fingers and struck him on the right side of the head.

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Green was attended to by the medical team before he walked off the field.

He was later withdrawn from the match with batsman Patrick Rowe named as the concussion replacement.

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"Green continues to be monitored by CA's medical staff. An update on his condition will be made on Saturday," a report on Cricket Australia (CA) website said.

Green is the second Australian Test squad member to suffer a head knock during a warm-up match against India. Opener Will Pucovski retired hurt in Australia 'A's tour match on Tuesday after being hit on the helmet by a Kartik Tyagi bouncer.

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The first Test begins at Adelaide on Thursday.