Canberra co-captain Josh Hodgson is suffering from a viral illness just five days from NRL grand final.
Hodgson did not attend training on Tuesday, with club officials confirming they didn’t want to risk it spreading to teammates.
However, they were confident the hooker would be fine to play on Sunday.
The Raiders are preparing for their first grand final since 1994 and face reigning premiers Sydney Roosters at ANZ Stadium.
Centre Joey Leilua (calf) got through training unscathed and appears set to play.
The Green Machine team will be unchanged heading into the decider after Josh Papalii was cleared of a dangerous tackle charge against South Sydney last week, while Sia Soliola accepted a fine for the same offence.
Roosters co-captain Jake Friend (calf) is racing the clock to return in the grand final after spending 10 weeks on the sideline.
Injuries have restricted Friend to just five games this season, allowing Sam Verrills make the most of his chance as the starting hooker.
Roosters coach Trent Robinson picked Boyd Cordner for the 2013 grand final despite the star forward missing almost two months with an ankle injury leading into the game.