The legal battle over Denny Solomona's contract could impact both rugby codes in a way the Bosman ruling affected football, according to a prominent sports lawyer. Despite having two years remaining on his contract with Super League club Castleford Tigers, Solomona retired from rugby league and subsequently joined Premiership rugby union side Sale Sharks on a three-year deal. On Sunday, the 23-year-old made his debut in Sale's 24-10 European Champions Cup defeat by Saracens. Castleford are taking legal action "as a last resort", with the Tigers suing for damages against Sale, Solomona and Andy Clarke - his agent - at the High Court in Leeds. The case, Tigers chairman Steve Gill said, is "for the integrity of all sports, including, of course, rugby union clubs". Good to see - a contract's a contract !