Hull have moved to sign Wakefield half-back or hooker Sam Obst on a two-year deal.
Obst, 30, makes the move to the KC Stadium after the Airlie Birds agreed a fee with the struggling Wildcats.
Hull have been on the look-out for options at half back and number 9 following the departure of Shaun Berrigan close to the start of the season, and have now got their man in the shape of Australian Obst.
Obst moved to Wakefield from Whitehaven in 2005 and has notched up nearly 150 appearances, scoring 44 tries and seven goals.
The Wildcats are set to exit administration when prospective new owners Spirit of 1873 Ltd complete their purchase of the club.
A statement read: “The Company wants all our loyal fans to understand that this transaction has taken place before we have been able to sign-off on our ownership of the Wakefield Trinity Wildcats and that the Company is not a party to Sam’s sale.
“While we are sad to see Sam leave Wakefield, we’re proud of the service that he’s given to the Club and wish him well. We also recognise that his leaving frees up a quota spot in the squad that will allow us, once we have full control of the Club, to bring in a new front row player.
“Work on the legal agreements around our purchase is still ongoing and the final written approval for Andrew Glover under the RFL’s “fit and proper person test” is currently awaited.”