I suspect some underslot deals, but I expect the underslot deals to be minimal compared to all other Sox drafts. For the first time in the bonus pool cap era the Sox signed not ONE college senior. This also means, we probably won't get any big bonus babies past round 10 today.
I would really like to see the Sox identify some young highschool talent that maybe takes the money and goes pro, guys who will sign in the 200-300K range. Sure, these guys have a very low chance of panning out but in a draft that was considered weak I'd rather bank on that upside rather than just sign a bunch of college seniors with no real upside.
I get they have to fill out minor league rosters as well, and you still want good guys on those teams. Reality is most of these guys will never make it to the bigs, but you want good dudes playing the Marcelo Mayers of the world and not D-bags. The little things matter.