Former Kiwi international Bronson Harrison is poised to join the St George Illawarra Dragons, replacing another former Raiders forward, Josh Miller.
Miller will announce his retirement at a press conference in Wollongong this morning.
Harrison has two years remaining on his contract at the Raiders but the 27-year-old has been on the outer at Canberra, the Raiders attempting to move him on to another club since mid-year.
It is believed Miller, who played 113 games for the Raiders, has been forced into retirement with ongoing issues with concussion.
"After meeting with a few doctors during the off-season, they've decided that I'm not allowed to continue playing," Miller said.
"I'd like to thank the fans for the support you gave me during my year at the club. It was an honour to play for the Dragons and it's something that I'll cherish for the rest of my life."
The Dragons have already lost backrowers Beau Scott (Newcastle), Dean Young (retirement) and Jeremy Latimore (Penrith) in the off-season. Miller's impending retirement opens further space for Harrison.