Jack de Belin's friend also charged with sexual assault in company

A friend of NSW State of Origin player Jack de Belin has been charged with raping a 19-year-old woman alongside the NRL star.

The 21-year-old man, Callan Sinclair, was arrested at a Shell Cove home on Monday and subsequently charged with aggravated sexual assault in company over the alleged December 9 attack in Wollongong.

De Belin, a 27-year-old lock for St George Illawarra, was charged with the same offence on Thursday.

Both men have been granted conditional bail ahead of a scheduled court appearance on February 12.

De Belin was earlier this week excused from a NSW State of Origin camp as he gets set to fight his charges.

He was due to be part of the Blues team debrief and bonding session under the watchful eye of coach Brad Fittler on Friday however was given permission to sit it out.

"Jack was selected in Brad Fittler's squad to come here today and we were in touch with the Dragons last night and we excused him," NSWRL chief executive Dave Trodden said.

Trodden would not comment on the matter, given it is before the courts, or whether rugby league had an image problem after a string of negative headlines.

"We're disappointed these allegations have been made but I think it's important to remember they're allegations at the moment," Trodden said.

"It's inappropriate to be running too much commentary on it because allegations have been made. I understand the allegations have been denied.

"It's for other people, the courts, the NRL integrity unit to make judgments about these sorts of things.

"I think it's really important to respect the processes that need to be followed and respect the rights of everyone, not just Jack but everyone that's affected by this."