Midfielder Rory Sloane will have a post-surgical review this week to determine the next step in his recovery from a procedure on a detached retina.
Sloane underwent the successful surgery last Tuesday and spent the next five days resting at home.
He will not train this week and will be guided by eye specialists on a gradual return to physical activity possibly next week.
Fellow onballer Jake Soligo trained indoors on Monday as he recovers from an ankle injury he suffered at training last week.
“Jake had scans on Friday which confirmed no structural damage,” Crows High Performance Manager Darren Burgess said.
“He trained on the bike today and we are hopeful he can resume running next week based on how his ankle responds in coming days.
“That will give us a clearer indication of when he will be able to return to training with the main group.”
Defenders Jordon Butts and Wayne Milera have both started their rehabilitation from hamstring injuries.
Milera ran on Monday and Butts is expected to run on Wednesday and both are considered 2-3 weeks away from rejoining main training.