Warriors assistant coach Steve McNamara has requested and been granted an immediate release from his contract to become head coach for the Perpignan-based Les Catalans in the English Super League.
Warriors managing director Jim Doyle said while it was disappointing to lose McNamara mid-season the club wouldn't stand in his way.
"We would have loved Steve to remain until the end of this season but we don't want to stop him being able to take up a position like this," he said.
Head coach Stephen Kearney said while McNamara's stay had been shorter than desired, he had made an impact.
"He's brought a lot to the club through his experience with England, in the Super League and at the Roosters," he said.