Manly have signed former test forward Willie Mason and Warriors' star Feleti Mateo and confirmed stalwart Anthony Watmough's release from the NRL club.
Manly chairman Scott Penn revealed the three big-name squad changes yesterday when the club also unveiled highly-rated former South Sydney and Chelsea FC administrator Joe Kelly as their new chief executive.
The shake-up comes after Monday's sacking of general manager David Perry as part of an ownership restructure.
Penn also dismissed talk that coach Geoff Toovey was under pressure to retain his job and said club captain Jamie Lyon would see out his career at the Sea Eagles.
Lyon has signed a contract extension, meaning he and fullback Brett Stewart will be at the Sea Eagles until at least the end of the 2016 season.