I'm going to chose my words carefully here so I don't sound like a dick. First of all, I could not imagine what is would feel like to be told I'd never walk again - I'm sure it would be truly devastating for he and his family. Financially, it would be a strain and a half too. However, we can't forget that McKinnon signed an NRL contract knowing the maximum payout of these incidents was $500,000. For this reason, I don't believe he will win the court case against the NRL.
He may have a elevated chance of winning against Mclean as I admit the tackle was illegal in accordance with the rules of the game, but I'm not sure what good that would do financially. Mclean would be on no more than $200k a year, so I doubt much financial relief will come through that avenue