Jock is a low-risk option. He couldn't be on much, he seems committed to staying with us, learning off Adam, and taking what opportunities he can over the next couple of years to improve his game to the point where hopefully he is the answer.
If not, with any luck Coby Black will have developed into a viable option by that point, or at least shown he has the ability to be the answer longer-term, if we can find someone on the market that can tide us over (or better).
With the experience of a couple more years, some combination of Mam, Walsh, Walters and Mozer may provide enough leadership and talent to see us thrive regardless of any shortfall at halfback post-Reynolds. I'm not overly concerned.