On Mets Hot Stove last night, they mentioned two Boras clients who did sign a contract that extended into the free agent years. Carlos Gonzalez was one, in 2011; I'm forgetting who the other guy was, but it was also in 2011. (It was a pitcher, I think.) So it can happen. If Matt Harvey really wants to stay, he can direct Boras to talk to the Mets. It's certainly a once-in-a-blue-moon kind of thing, but it's not impossible.