Somebody will take him, he'll get his [bleep] together and turn into a decent QB. Not many remember, but Brett Favre started his career in Atlanta. He was let go for similar reasons after 1-2 years. No internet back then so the reasons why were kept quiet. He grew up and turned into a HOF Quarterback.
He will get his 2nd chance. I think he'll either turn out to be one of the great ones, or he'll burn out in another year.