1) We could trade JD, if he opts in, so it's not all about JD's decision. It could be about the Sox decision on moving him.
2) I'm thinking, if JD is gone, there should be less need not more for JBJ. It would mean we are looking at a rebuild and reset. Keeping JBJ does not fit into that plan.
(Yes, I know we can reset by keeping JBJ, if JD is not back, but it would still be a waste keeping a $10M one year player. Instead, use the budget space to look for some strategic FA signings at relatively low or moderate prices that will still allow us to sign Betts or someone else after 2020.)