GREG BIRD's manager has challenged the NRL to intervene in the Test and Origin star's ongoing battle with Cronulla, accusing the game's top administrators of double standards.

Gavin Orr questioned why the NRL was supporting the Sharks' decision to suspend Bird while the Roosters' Setaimata Sa had been allowed to continue club duties, although he is also facing assault charges.

Wearing a Roosters tie, Sa attended court in Wollongong last week charged with grievous bodily harm - the same charge against Bird was dropped by police investigating his alleged assault of girlfriend Katie Milligan in August.

That has not been lost on Bird and his manager, who are due to front the Cronulla board within days amid strong suggestions the Sharks are readying to sack the 24-year-old, even though remaining charges against him are yet to be heard and the matter is not due in court again until April 27.

While not referring specifically to the case of Sa - who is alleged to have thrown a punch that fractured a man's skull during a scuffle outside a fast-food outlet earlier this year, and whose case was adjourned to December 17 - Orr was puzzled that Bird remained sidelined from club activities.

"The NRL, somewhere along the line, have to actually make a decision," he said. "I'm just dealing with facts. A couple of people have been charged with different things. Greg was charged with a similar thing, and it's been dropped to a lesser charge. And he's still out."

Sharks CEO Tony Zappia, whose role in an incident in which a female staff member was injured is expected to be set upon by Orr and his legal team, maintained the cases were different. "I don't know the ins and outs of this [Sa's] case, and I'm sure he [Orr] doesn't either," Zappia said.

Orr maintained the Sharks did not have a legal leg to stand on if they planned to sack Bird at a specially convened board meeting, likely either late this week or early next.