St George Illawarra star Jack de Belin has lost his bid to be reinstated by the NRL in the Federal Court on Friday.

Justice Melissa Perry ruled against the incumbent NSW lock in his case against the ARL Commission and NRL.

It means de Belin remains ruled out indefinitely while he answers an aggravated sexual assault charge in Wollongong Local Court.

Justice Melissa Perry ruled that de Belin pay the NRL’s legal costs.

“The court found the respondents had established a clear and present danger to their legitimate interests given among other things,” Justice Perry said.

“The seriousness of the charge against Mr de Belin and the unprecedented extent of negative headlines which it attracted.

“The fact that the reputation of the NRL competition was tarnished by the allegations and tarnished against Mr de Belin and other players during the off-season described in media reports as the summer from hell.”

ARL Commission chairman Peter Beattie and NRL chief executive Todd Greenberg are expected to hold a press conference on Friday afternoon.