Then the league would need to tighten up on medical reports and clearance, if the player lies about his health then suspend him as well, bottom line its time to seriously get tough on these dirty rats out there before someone winds up dead.
These dirty rats have been in the game since its birth. You want to get tough with medical reports.
How can you prove that someone is feeling well from a concussion?
Then if he is lying then you did good.
If the person is telling the truth and you THINK they are lying then you force them to pay a fine?
Now, you have become the rat.