Adelaide recruit Curtly Hampton will miss the first 6-8 weeks of the season due to a stress reaction in his foot.
Hampton was a late withdrawal from Adelaide's SANFL practice match last week after pulling up sore from training, with scans revealing a stress reaction.
"It’s disappointing for both Curtly and the club but fortunately it has been picked up early," Adelaide general manager of high performance Brett Burton said.
"Curtly will not require surgery but will wear a moonboot for the next couple of weeks as he begins his rehabilitation."
The former Giant joined the Crows during last year's trade period after 51 games in four seasons with the Giants, but only managed five senior games last season, prompting the 23-year-old to seek a fresh start.
The 186cm defender arrived at West Lakes in exchange for Adelaide's second pick in the 2016 National Draft.