South Sydney appear to have locked in a replacement for rugby union-bound Sam Burgess, with Penrith prop Tim Grant to join the Rabbitohs next season.
The Panthers on Friday agreed to release Grant from the final two years of his contract to link up with the Redfern-based NRL club on a four-year deal from 2015.
He will, however, see out the remainder of the season with the Panthers.
The western Sydney outfit said Grant had approached club officials "several weeks ago" about a possible release, but eventually agreed to stay until the end of 2016.
"However, after a change of heart he again approached club bosses to ask for a release, which has today been formalised," the Panthers said in a statement.
News that makes sense
Your trusted source for staying up-to-date with the world around you. Get free daily news updates and analysis, straight to your inbox.
"The Panthers respect Tim's decision and wish him all the best for his future."
The 26-year-old has played 114 first-grade games for the Panthers since his debut in 2007, as well as two State of Origin appearances for NSW.
Rabbitohs coach Michael Maguire said Grant would add plenty of firepower to his forward pack, which will be without Burgess next season after he signed a three-year deal with UK rugby outfit Bath.
"Tim has represented his state and played over 100 first grade games, so he will bring experience to our pack as well as strong defence and plenty of size," Maguire said.
"He will add strength to our front row rotation, and we're looking forward to him joining our squad next pre-season."
Grant said he was excited about the move but admitted he still had some unfinished business at the foot of the mountains.
"I still have a job to do here at Penrith for the remainder of this season, and I'll be doing everything I can to help the Panthers have a successful year in 2014," he said.
