Best plan I can come up with that the FO would probably go with is:
Sign two of Ryu, Giolito and Flaherty to one year deals. I think Giolito will show he still can be a great 4/5th starter. I think Flaherty has a lot to give in terms of talent, but he'll have to stay healthy.
Trade for Salvador Perez - I hope he's still a good game manager. He would help Gio and Jack improve their stocks, if so.
Sign Will Smith as a relief pitcher (I'd go all scrapheap types though since a bullpen is a crapshoot and this team isn't ready to compete)
Brandon Crawford as a SS
Pickup the TA option and move him to 2B
Sign two of k*** Hernandez, Joc Pederson, Jason Heyward off the bench as a utility man/platoon guys.
This is not something I necessarily want, but I think that's the best you can do with the constraints the Sox put on themselves.