South Sydney issued a short statement on Friday confirming Inglis, who retired earlier this season with more than 18 months left on his Rabbitohs deal, has entered a clinic.

"Rabbitohs and Souths Cares ambassador Greg Inglis has entered a facility to undergo treatment to assist with and support his mental health," a South Sydney statement said.

"On behalf of Greg and his family, we ask the media and the public to respect their privacy. No further comment will be made by the Rabbitohs, Greg, his management or his family at this time."

Inglis played 265 NRL matches for both the Storm and Rabbitohs as well as 39 Tests for Australia and 32 games for Queensland in the State of Origin arena.

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