Port Adelaide vice-captain Zak Butters will be tested this week for a possible return to football this Sunday afternoon.
The 24-year-old underwent a knee procedure during pre-season, and has now rejoined full training in a bid to be deemed fit for Round 4.
Ollie Lord (shoulder) and Lachie Jones (adductor) will also be assessed throughout the week as they recover from their respective injuries.
Jack Lukosius is now one-week post-surgery and has begun his rehabilitation, while Ryan Burton will be sidelined for up to a fortnight as he manages a hip flexor strain.
Port Adelaide will name its extended squad for its Round 4 game against St Kilda on Thursday at 5:50pm.
Injury list
Zak Butters (knee) - test
Ollie Lord (shoulder) – test
Lachie Jones (adductor) – test
Jed McEntee (hamstring) – 1 week
Tom Anastasopoulos (ankle) 1-2 weeks
Ryan Burton (hip) - 2 weeks
Brandon Zerk-Thatcher (back) 4-6 weeks
Jack Lukosius (knee) - TBC
Todd Marshall (achilles) - TBC
