Former Great Britain international Keith Senior has paved the way for a switch of codes after joining Leeds Carnegie for pre-season training.
The 36-year-old former Sheffield Eagles and Leeds Rhinos centre has been out of the game for more than a year after undergoing a knee reconstruction.
He said: "I would like to thank Chris Gibson and Diccon Edwards for giving me this chance to train with Leeds Carnegie. I know they are preparing for a big year in the Championship and hopefully as well as proving my own fitness, I can also help them out given my experience at the top level, albeit in a different code."
He left the Rhinos at the end of the 2011 season and was left without a club when Welsh side Crusaders, with whom he had signed a two-year contract, pulled out of Super League.
Senior, who won 33 caps for Great Britain, started out in rugby union in Huddersfield before joining Sheffield Eagles before the advent of Super League in 1996 and looks set to return to his roots with Leeds, who were relegated from the Premiership just over 12 months ago.
Senior added: "I am still working hard with the medical team here at Leeds and I am confident I will be able to play rugby again."
Leeds Carnegie head coach Diccon Edwards, a former Castleford player, said: "We are delighted to welcome Keith into our group for pre-season training.
"The hope is that he can prove his fitness and we can then sit down with him and discuss the future after that.
"He has been doing a lot of training on his own because of the nature of the injury and it is good that we are able to bring him back into a team environment and I know that is something he is enjoying.
"We have a young squad and his experience is a great addition to our group during this vital part of our preparations."