Unsurprising posturing by Manziel's agent. No chance he will be signed for $500K. His "other professional options" do not include playing in the CFL, as Hamilton now has his rights for another year. His agent seems not to like the league rule that gives us those rights, but who gives a damn?
Personally, I don't care if he is signed by us. In many ways I prefer he does not play in Hamilton. Though I don't hold him personally responsible for this nonsense, it certainly does nothing to increase my very limited enthusiasm for him.
If another team (Montreal?) wants to pay him that kind of money, by all means let's trade the rights to him. I'd love some more good draft picks.