Catalans Dragons finished ninth in Super League this season and are adding experienced NRL players as coach John Cartwright reshapes the squad for 2027.
Nathan Brown, 33, will join the French club after Manly Sea Eagles declined to extend his contract beyond 2026.
His departure was confirmed in early September, ending an 11-year NRL career that included 201 games for five clubs.
Brown played for Wests Tigers, Parramatta Eels, South Sydney Rabbitohs, Sydney Roosters and Manly, and represented New South Wales twice in State of Origin.
He arrived at Manly before the 2024 season and made 53 appearances across two seasons.
Hame Sele, Luciano Leilua, Jesse Arthars and Tyson Gamble are also moving to Catalans next year.
At Manly, Brown's exit gives younger forwards room to advance, including 20-year-old Simione Laiafi.
After making his NRL debut early this season, Laiafi started in the front row from Round 17 to Round 27 and could take on a bigger role in 2027.