You ever notice that the FA market always looks better 2-3 years out? That's because potential free agents always sign extensions or exercise options.
That will happen in 18-19, too.
Is Sale our guy? Archer? If they think so, they need to dig deep. It doesn't get easier or cheaper if you wait. Gosh, Archer is practically free for the next half-decade.
Unless, of course, your aces are Sean Newcomb and Max Fried.