A 23-year-old who admitted taking part in the rape of an unconscious man at an Australia Day party in Brisbane will learn next week if he will serve jail time.

Frazer John Eaton pleaded guilty on Friday to the charge in Brisbane District Court.

The former surf lifesaving representative and talented Australian rules footballer held the young man's shoulders while one of his co-accused assaulted him with a beer bottle. Credit:

He was due to be sentenced that afternoon, but Chief Judge Kerry O'Brien said he wanted to give the matter "further thought" and adjourned his decision until February 9.

Prosecutor Victoria Trafford-Walker told the court Eaton and some of his friends decided to "get" the 18-year-old victim at a 2015 Australia Day party in Kedron while he was drunk and passed out.