Bradford Bulls prop Craig Kopczak has left the Super League club after terminating the remainder of his contract.
The prop informed the Bulls he would not be available to face Catalan Dragons in the last game of the regular season, arguing that Omar Khan's imminent takeover allows him to walk away from the final year of his deal.
The Bulls' acting chief executive Gary Tasker believes Kopczak has been approached by a rival Super league club.
"I'm bitterly disappointed that the player has taken advice which has resulted in him leaving the group at this late stage of the season," Tasker told the Bradford Telegraph & Argus.
"The major disappointment in this episode is that a young player on a good contract doesn't normally terminate it unless he is being offered better terms elsewhere.
"At a meeting of Super League clubs several weeks ago, the clubs agreed unanimously that they would not approach Bradford's contracted players.
"It would appear that a club has broken ranks and made the player a better offer. It's now in the hands of our legal advisors to resolve it."
The player's agent, Martin Shuttleworth, confirmed Kopczak had taken legal advice, drawing on legislation used in the recent Rangers case, namely the Transfer of Undertakings (Protection of Employment) regulations 2006 (TUPE).
"Craig was notified by the joint administrators by letter dated September 3, 2012 that his playing contract had transferred with effect from August 31, 2012 to OK Bulls Ltd," read a statement.
"He then served notice on the administrators that he objects to the transfer of his employment under the relevant TUPE legislation.
"The net effect of having served the notice is that he is deemed to have resigned with effect from August 31, 2012 and his employment with the club is automatically terminated."