Geelong defender Jackson Thurlow has been placed on the long term injury list by the club.
Thurlow injured his ACL in the Cats NAB2 clash with Essendon in Shepparton. He will undergo surgery to repair it on Thursday.
No replacement from the Cats rookie list has been nominated as an upgrade as yet.
Thurlow is the only Cat currently on the long term injury list ahead of the round one blockbuster with Hawthorn.