He faces a one week ban unless he can beat the charge at the judiciary.
While the Broncos are yet to lodge a plea, if Roberts is sidelined, Wayne Bennett will be forced into changing his backline.
Tom Opacic missed last week’s match with a shoulder injury but is expected to be fit to return to the filed this week.
Opacic, 22, has played eight games in his rookie season and averages 78 metres per game.
He’s scored four tries and made 14 tackles busts.