Quote: SmokeyTA "That doesnt apply to players though, nor does it disgraced directors who have been banned for 7 years.'"
But the director has not been impacted by the salary cap since his wage does not count so I would imagine he would not be able to sue the RFL over the salary cap itself. He could, presumably, attempt to sue them with regards to his own personal punishment and protest it was too harsh but again that is not really suing the RFL over the salary cap as restrain of trade but over not applying appropriate punishment in his eyes.
As you say it doesn't apply to players, but it would take a very brave/stupid player to try it since it would cost them a lot in the short term and there's still no guarantee he'd win since the salary cap is at £1.6m and he might have to try and prove he was worth more than that and could command a wage of more than that were there no salary cap in place. I note your reply to Codead but I don't think that's strictly true since nothing is stopping Wigan, for instance, allocating all their salary cap to Sam Tomkins and paying him £1.6m, they simply made a choice it wasnt worth having only 1 senior player compared to 25 on lower wages.