Well, most of Martin's 2019 salary is a sunk cost, so you're not really paying $16M for two prospects if you don't think he'll provide much value on the field.
That said, I'd rather just keep him around for a final year than eat 80% of his contract for a couple of fringe guys. Hope he retires after 2019 and moves into another role in the org.
Does anyone really have a burning desire to see Reese McGuire on the team full time immediately?