it might not just be NFL money he's costing himself.
He is absolutely costing himself more than NFL money.
I tried to look it up and as far as I can tell he has (had?) one national endorsement deal (Oakley).
After his MVP season he should have had at least one full off season of GEICO (or whatever) ads. Nope.
No shoe deal either. That's crazy.
He has his own apparel company, Era 8 apparel, and they have very few products (including Night Lights unisex cologne and a children's book) on an amateurish website.