Vice-captain Taylor Adams will miss the remainder of the home and away season after scans revealed a strain to his groin.
Adams injured himself in the second term of Saturday’s match against Port Adelaide.
He will be assessed further in the coming weeks.
A corked upper leg meant Jeremy Howe spent the final quarter of Saturday’s game on the bench.
He completed pool recovery on Monday and is expected to complete limited training on Tuesday before being assessed on Thursday.
Brodie Grundy, Harvey Harrison, Jack Madgen and Aiden Begg all returned through the VFL at the weekend.
After 14 weeks on the sidelines, Grundy played into the fourth term and collected the typical bumps and bruises sustained during a first game back.
He will also be assessed on Thursday.
Jordan De Goey returned to the AFL side and has recovered from the match well, while Brody Mihocek missed round 20 with a hip injury.
Mihocek has had five days rest from running and will be assessed on Thursday.
There’s been a couple of notable improvements on the long-term injury list, with Nathan Kreuger and Tom Wilson progressing positively.
Kreuger has completed four weeks of running and will undergo fitness testing at the end of this week.
He is looking likely to return to contact training and ball work next week.
After a review with his surgeon last week, Wilson has been given the green light to increase the intensity of his rehab program.
His back symptoms have settled, and he will move into more running work and functional football training.
Reef McInnes is expected to produce some good results when he undergoes fitness testing this week.
Charlie Dean will spend another three weeks in the moon boot before he begins his rehab process.
High Performance Manager Jarrod Wade provides a complete update: