Hull FC centre Setaimata Sa has agreed to join Widnes Vikings at the end of the season.
The 27-year-old, whose current deal at the KC Stadium is due to expire when the campaign finishes, has made 25 appearances for Hull since joining the club from rugby union side London Irish.
"I've seen a few Vikings games and they play a brand of footy that I enjoy playing," he told Widnes' official website.
"I have still got plenty to learn and it will be great to keep learning from the coaching team at Widnes."
Hull are back in Super League action on Friday when they host St Helens in the Super 8s.
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