You can safely assume Larkin, Raymond, and any of the new signees aren't a part of that trade. Perron has little value in a trade like that and Ottawa really has no need for Copp.
That essentially leaves Fabbri, Rasmussen, Berggren, Kubalik, and Veleno. I seriously doubt OTT puts much value in Kubalik or Veleno. Fabbri, while useful, is made of glass, and IMO Detroit shouldn't be moving Rasmussen or Berggren.
So that's pretty much a no go.
Not to mention Detroit's 1st next year has a decent shot of being 8-12. Boston's is a total crapshoot, which is why I don't see Detroit trading it until there's a clear idea of where Boston falls in the standings.
And then to my post:
This is a weird brag considering Hayton was universally considered a reach and both teams passed on Hughes.