With almost 400 senior appearances, the Ireland international takes quality, experience and leadership to the Halton Stadium for a crucial stage of the season.
After helping Castleford Tigers reach the Challenge Cup final in 2014, Finn moved to Wakefield Trinity in 2015, becoming an influential figure in their resurgence in recent seasons. Liam supported the club to achieve a run of consecutive top eight finishes, delivering a string of highly impressive performances for Trinity.
Trinity chairman, Michael Carter said: “Liam has been a fantastic part of this club’s journey over the last three years. I am delighted that Liam has agreed to become a part of our first team coaching set up from October for the next two years. This loan move to Widnes allows Liam to play out his final season of Super League rugby.
“Every Wakefield fan should be grateful to Liam for the part he has played in our club’s recent history and I am sure he will be a success at Widnes over the coming few weeks.”
Finn added: “I’m excited by the challenge presented by this loan move. Widnes Vikings have had a tough year, so I am looking to help them through this period and maintain their place in the Super League.”