Wayde Egan is the latest Penrith player to be granted an early release from his contract, with the hooker to join the Warriors on a three-year NRL deal.
The Panthers allowed Egan to walk just eight months after handing him a two-year extension that tied him to the club until the end of 2021.
His departure comes two months after Penrith beat the Warriors in luring Apisai Koroisau back to the foot of the mountains.
"He's a high quality hooker who had an outstanding NYC career and has really impressed since coming into first grade," said the Warriors general manager of football Brian Smith.
"His enthusiasm and skills at dummy-half have attracted the attention of our recruitment and coaching staff and we know he'll make a significant impact with us."
Egan's exit continues a mass player clean out in Ivan Cleary's first year as coach.
Reagan Campbell-Gillard, Dallin Watene-Zelezniak, Waqa Blake and James Maloney have all departed despite having at least one year remaining on their deals.
Hooker Sione Katoa signed with Canterbury after his contract expired, so Koroisau the only new face so far joining the club for next season.
The Panthers have extended rookies Billy Burns, Mitch Kenny, Spencer Leniu, Liam Martin and Brent Naden, all of whom debuted this year.
Jarome Luai and James Fisher-Harris were also given new deals.
"As a club we would have liked Wayde to see out his contract, however we also understand the opportunity presented by the Warriors was a difficult one for Wayde to turn down at this point in his career," said Penrith general manager Matt Cameron.
Australian Associated Press