STAR Geelong midfielder Tim Kelly will need to prove his fitness ahead of this week's clash with Greater Western Sydney, while teammate Jordan Cunico is facing an extended period on the sidelines.

Scans confirmed Kelly had suffered a low-grade ankle sprain in the final quarter of Geelong's win over Adelaide on Thursday.

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While he has started to walk freely and avoided crutches, Kelly faces a fitness test later this week in order to face the Giants.

Meanwhile, Cunico underwent an ankle reconstruction over the weekend after he was carried from the ground in Geelong's VFL season opener on Friday night.

After travelling with the AFL team to Adelaide as one of two possible emergencies, Cunico's fracture required a plate to be inserted.

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While the setback is seen as long-term, the Cats haven't ruled out the possibility of the 22-year-old adding to his 15-game AFL tally later this season.

Despite finishing the win over the Crows on the bench with a corked hip, Irishman Mark O'Connor is expected to be cleared to play against the Giants.

Defender Jack Henry is also set to be considered for selection after missing last week with a hamstring complaint.