Gold Coast have been forced into a late change ahead of Sunday's clash with Carlton, with Lachie Weller withdrawing from the squad.

Weller sustained a hamstring injury which saw him depart Friday's training session early, with Suns General Manager of Football Operations Jon Haines detailing the extent of the problem to the Suns' website.

โ€œUnfortunately for Lachie, he wasnโ€™t able to complete todayโ€™s training session,โ€ Haines said.

โ€œHeโ€™ll go for scans later this afternoon on his hamstring and weโ€™ll know more around his return to play after that.โ€

The Suns have brought Ben Ainsworth onto the extended bench.

Both the Suns and Blues will confirm their 22-man squads on Friday at 5pm.