Then there's the case of Josh Lueke. See link below if you don't know his story.
Seems like if Lueke pitched in majors, maybe the kid gets a chance at some point. Maybe he has to go independent route first, if not drafted or signed. If he's a Trout-like TORP, he will be signed eventually. Could have to pass a high bar to get a chance.
http://deadspin.com/josh-lueke-is-a-rapist-pass-it-on-1566010458