So his being out of the NFL is his fault and his fault alone. He wants to play but on his terms. As you said, he was offered a job in the AAF but he wanted a ridiculous amount of money. The CFL offered him a job and he turned it down. Hell, he optioned out of his contract with SF.
I used to believe he was being blackballed but then an NFL team brought him in and he wanted a huge deal. Then it happened with a league where the average salary is $250,000
I am probably being cynical here but it doesn't sound like he wants to be signed by anyone.