Zac Lomax has turned his back on the NRL to sign a two-year deal with the Western Force and Rugby Australia.
The move comes after Lomax was blocked from joining a rival NRL team until 2028, after a messy attempt at leaving the Eels to join the Storm, which came after Lomax's move to breakaway competition R360 was postponed.
The move means there is a chance Lomax could play for the Wallabies at the 2027 Rugby World Cup.
"I'm incredibly excited and thankful to be joining the Western Force after reaching an agreement with Rugby Australia to make the switch to rugby union," Lomax said in a statement.
"This is a huge opportunity and a challenge I'm really looking forward to embracing. Stepping into a new code will push me as a player and that's something that genuinely motivates me.
"The chance to be part of what the Western Force are building and to test myself at the highest level of rugby union is something that really excites me. Like any player, the dream of one day representing the Wallabies on a truly international stage and potentially competing at a Rugby World Cup is a powerful motivation."
Western Force coach Simon Cron said the wheels for the move had been in motion since late last year, when Lomax visited Perth.
"He has remained in contact during the process and has always been extremely enthusiastic about the opportunity of joining the players who have chosen Perth as their home," Cron said.
"Anyone who has seen Zac play knows what he will add. Combine that with his drive and professionalism and I have no doubt he will be extremely successful."
Lomax isn't expected to play immediately, but could play his first game for the Force on March 28 in Perth.