The 28-year-old – nicknamed Rhino -will play for the reserves side against Wigan this weekend, after having spells with Wasps, Northampton Saints and lately Newcastle Falcons.
“We’ve given him a little four-game trial starting with tomorrow’s match,” said Head Coach Steve McNamara.
“He’s a big winger at six foot one and 108 kilos and he’s had some success in union, playing for England Saxons last year.
“But he’s always been a big rugby league fan. He came down to see us a while back and had a little look around.
“We’re more than pleased to accommodate him and have a look at him in practice and matches.
“Obviously, there’s not a massive amount of outside backs around and when you have a player who wants to come here and has the sort of pedigree he does, we’re more than happy to see what he can do.”