I think the Sox pick up a short term catcher on the market. They could go all in for Realmuto, I suppose. But if not, James McCann and former Bloom acquisition Mike Zunino top the list of suspects, along with dark horse Tyler Flowers.
I have no idea who this year's Charlie Morton aka Bloom Target is, if there is one. I never saw Martin Perez as a target for this past offseason. But it is possible that Bloom relies more on the SP he already has, which is a list that does include ERod and Sale, plus whoever he gets via trade (Lopez? Someone for Vazquez?), and then focuses on building up the Sox lackluster bullpen in to more of a team strength, or at least less of a liability. Liam Hendriks, Trevor Rosenthal, and the very underappreciated Trevor May seem like good candidates. Hector Rondon is struggling this year, but it also typically a very underrated reliever who has had a pretty good career..