The Warriors have released front-rower Albert Vete, but re-signed NRL assistant coaches Stacey Jones and Tony Iro.
Vete will make a mid-season transfer to continue his career in Australia with reports he is close to joining Melbourne - who recently missed out in their attempt to lure fellow Warriors front-rower Chris Satae away from the Auckland-based club.
The 25-year-old Tongan international has struggled for game time this season - making just two NRL appearances - and departs after making 46 appearances since debuting against Newcastle in round one of the 2015 season.
"We really appreciate the contribution Albie has made to the club both on the field and off it," said Warriors general manager football Brian Smith.
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"He was among a group of young players who came through the system in 2015 and finishes just short of the 50-game milestone. We wish Albie and his family all the best for the future."
Meanwhile, the club have announced the re-signing of both Jones and Iro through to the end of the 2020 season.
Jones was appointed an assistant coach when head coach Stephen Kearney joined the Warriors following the 2016 season, while Iro rejoined the NRL football staff this year after previously filling the assistant coach's role with Ivan Cleary, Brian McClennan and Andrew McFadden.
"Stacey and Tony have done a wonderful job in their roles and in challenging the group to constantly improve," said Kearney.
"They bring tremendous experience with their playing backgrounds and are constantly looking to develop as coaches.
"From a club viewpoint it's also really important that we have some continuity with our football staff so it's terrific that we've been able to keep Stacey and Tony onboard."
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