The Warriors will wait until the day of their game against Parramatta to determine whether Stacey Jones can coach the side.
Jones contracted COVID-19 last week and has deferred coaching duties to assistant Justin Morgan while in isolation.
The Warriors told AAP that Jones had tested negative on Thursday but will need to return another negative test on Friday before he can join the team, who fly out to Sydney on the day before the game.
Jones will not be looped in via video-conference if he is unable to coach the side in person.
Outside back Dallin Watene-Zelezniak has been ruled out of the game through COVID-19 but the virus has not spread to any other members of the playing group, as of Thursday afternoon.
Meanwhile, Eels coach Brad Arthur will make a call on Junior Paulo's availability on game day.
Paulo featured for NSW in the State of Origin decider at Suncorp Stadium on Wednesday night and while the Eels co-captain told the club he was keen to back up, a firm decision has not yet been made.
Paulo played 44 minutes of the Blues' 22-12 loss in game three for a return of 126 run metres and three tackle breaks.
