The Parramatta Eels' Oregon Kaufusi is sidelined after suffering a concussion last game.
He is expected to make a return next week.
Blake Ferguson could also return in Round 23 from a calf injury which has seen him sidelined since Round 21.
As confirmed earlier, Reed Mahoney has suffered a season ending shoulder injury and won't return until 2022.
Wiremu Greig could be available for selection in Round 23 after suffering an ankle syndemosis injury.
Nathaniel Roache and Reagan Campbell-Gillard both remain indefinitely out.
Reed Mahoney – Shoulder (Season)
Oregon Kaufusi – Concussion (Rd 23)
Blake Ferguson – Calf (Rd 23-24)
Wiremu Greig – Ankle syndesmosis (Rd 23-24)
Nathaniel Roache – Knee bruising (TBA)
Reagan Campbell-Gillard – Groin (TBA)