Huddersfield Giants centre Lee Gilmour has agreed to join Castleford at the start of the 2013 season.
The 34-year-old, who can also play as a back-row forward, has signed a two-year contract with the Tigers.
"We were in need of someone with that experience and knowledge," said coach Ian Millward. "He'll also be a great mentor for our younger players."
Millward added: "Lee is a very good communicator on and off the field and I'm delighted he'll be coming to Cas."
Former Wigan, Bradford and St Helens man Gilmour had a year remaining on his contract with Huddersfield but has been able to negotiate an early release from the Giants.