Wigan Warriors have announced Sam Tomkins will leave the club at the end of the 2018 season.
Sky Sports News understands Tomkins will be joining Catalans Dragons, with the French club expected to make an announcement on Tuesday.
The 29-year-old returned to Wigan in 2016 for a fee in excess of £200,000 after two years in the NRL with New Zealand Warriors.
Wigan signed Tomkins to a three-year deal as one of their marquee players with a club option for a fourth year, which the Warriors have now declined to take up.
Warriors executive director Kris Radlinski explained the club have deemed the terms of the fourth season too high but did instead offer Tomkins a lucrative four-year extension, which he has declined.
"Wigan had an option on Sam's contract to keep him as one of our marquee players for 2019," Radlinski said.
"After a great deal of consideration, taking all of the factors into account and following an open and honest conversation with Sam, the club felt that the option salary set when Sam returned from New Zealand was too high and opted instead to offer a substantial new four-year deal in its place.
"This new deal was still one of the top three contracts that the club has offered anyone in the past 10 years and was as a marquee player still."
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