Greg Inglis has been admitted to a facility to undergo treatment to assist with and support his mental health.

Key points: Greg Inglis retired from the NRL in April after 263 appearances

Greg Inglis retired from the NRL in April after 263 appearances Inglis advanced his proposed 2020 retirement date due to repeated injuries

Inglis advanced his proposed 2020 retirement date due to repeated injuries Preston Campbell urged Inglis to pursue community service to avoid emotions pitfalls of retirement

A brief South Sydney Rabbitohs statement said "on behalf of Greg and his family, we ask the media and the public to respect their privacy".

NRL chief executive Todd Greenberg told Channel Nine he was "aware of some of the issues that [Inglis is] facing".

"It will be a journey for Greg, but he's got a lot of support," Greenberg said.

"He's got a lot of people around him, including all of us at the NRL."

The former Souths, Queensland and Australia star announced his immediate retirement from rugby league back in April after a succession of injuries and other off-field battles, including a mid-range drink driving offence in October last year.

He had previously said he wanted to retire at the end of the 2020 season.

Greg Inglis has been urged by Preston Campbell to take up a career in community service. ( AAP: Daniel Munoz )

South Sydney coach Wayne Bennett, who supported Inglis's decision to retire, has rallied around the star player.

"The best thing I say about Greg is that he's getting the support that he needs," Bennett said.

"So that's as much as I want to talk about it, elaborate on it. But that's the situation."

Speaking to ABC Grandstand, former NRL star Preston Campbell had warned of the emotional pitfalls of retirement potentially facing Inglis.

Campbell had urged Inglis to pursue a career in community service after his retirement.

"Rugby league is a great way to make some changes in society and Greg has been able to do that as a rugby league player, with his attitude," Campbell said.

"If you've got a profile in the game it gives you a platform to talk about things that are really important to you, and there's a lot of pressing issues in our communities, not just Indigenous communities, all of Australia.

"The legacy [Inglis] is going to have going into his after-footy career, I think he could make plenty of change in community — not just for the Indigenous people, but for the whole of Australia, but he needs to be ready for that.

Campbell, who founded the Preston Campbell Foundation to provide mentoring and programs to Indigenous people, said Inglis's standing in the game gave him the platform to effect significant change.

"He was a giant in the game and sometimes he is going to feel like a small fish," Campbell said.

"He's going to have to remember again that there are so many people out there who want him to be successful.

"He's so valuable to the community, but he'll be so valuable to the game as well."