I've made a lot of suggestions, but Vaz is one that will bring back the most.
We've talked about just how much Chavis is worth, if anything. Chatham might be wanted. With Renfroe, Marisnik & Miller added to the roster, Duran, Wilson or Rosario could be trade pieces.
I'm not for trading Dalbec, but you have to give to get, so maybe he could be dealt, instead of Chavis, and if we do trade him, maybe we add Moreland to the FA signing list of non-pitchers.
We'd need to find a catcher.
Maybe Vaz goes to Philly or TB and we get Taillon, Stallings and/or maybe Frazier from Pitt and/or Anderson/Fairbanks from TB. I'm not sure, if the players I listed are enough or even wanted, but the BTV site says they are enough, even without Dalbec.
This trade will fill every major need area:
BOS: Taillon, Anderson, Kiermaier, Stallings, Frazier
TB: Vazquez & Duran
Pitt: Baz, Chatam, Chavis & Grullon
(I'd give even more, if needed- like Groome or Ward or Arauz/Wilson/a bubble pitcher.)