Cameron Munster and Brodie Croft will not play tonight against Penrith.
The pair failed fitness tests early this afternoon on their respective knee injuries and have been withdrawn from the squad.
As a result, the NRL has approved the promotion of Scott Drinkwater into the 18-man squad for tonight's game.
Craig Bellamy will confirm his final 17 one hour before kick-off.
Match: Storm v Panthers
Round 25 -
Venue: AAMI Park, Melbourne