Western Sydney Wanderers coach Tony Popovic says he's unsure what impact the expected absence of the Red and Black Bloc will have when they host Brisbane on Saturday night.
Parramatta Stadium's north terrace will be empty for the first time since the A-League club's inception should the RBB carry out their threat to indefinitely boycott matches due to grievances with Football Federation Australia.
Popovic said the club needed to respect the stand made by their active supporter group, but said the team still needed to step up.
Asked whether their absence would affect the players, he said: "I don't know. We haven't had a game without them there.
"But if they're not there, we have to move on. We still have to perform."