Clark, who hails from Cardiff, has been at the club for two seasons and has helped to develop a number of young Welsh players to their professional Rugby League debuts and to Welsh honours at various levels.
He said: “It’s been a fantastic two years here in South Wales and I’m really pleased to have played my role in player development.
“I’m proud to be Welsh and I love my country but my family are based in Cumbria and it’s been very difficult for me to make 800 mile round trips on a weekly basis and be away from them for so much time during the week.
“I am delighted to still be in Rugby League and equally delighted to be joining a new role with the Cumbrian Regional Academy via the Rugby Football League. I played most of my Rugby League in Cumbria, for Barrow Raiders and I look forward to helping new players along in the other area of the UK that I have a passion for.”