Alright, here's a potential deal I actually think is feasible. We know the Red Sox are trying to win now, as always, and Boegarts and Pedroia aren't going anywhere. Ramirez and Sandoval are also under contract for several years, so they won't have a lot of room in the IF anytime soon. And with Bradley's play last year, they have to feel pretty good about Castillo, Bradley, and Betts in the OF. What they still desperately need is pitching. Porcello is garbage and Buchholz is iffy. Eduardo Rodriguez looked good last year but Owens struggled, and they need some young, talented blood in that pool to compete.
So my proposed deal would be: Miller, Sims, and Ruiz for Devers and Benintendi. We know Wren drafted Sims, and while I would hate to trade him right now, I'd be willing to since he's gotten some of his value back. Ruiz isn't a great piece but at least gives them a guy to replace Devers who has a chance to have a bounce-back year and be a good long-term option there still. And obviously Miller is the big piece. And it gets us two guys that won't be ready for another couple years but fill huge positions of need for our future. And we would still have a large collection of arms who are either ready now or will be soon (Teheran, Wisler, Newcomb, Jenkins, Banuelos, Folty, Gant, Ellis).
I would love that deal and I think the Red Sox would be tempted to pull the trigger. Miller would give them a good #2 behind Price for the next few years, and Sims will be ready to compete for a spot in the rotation soon. Their offense should be good, and a rotation of Price/Miller/Buchholz/Rodriguez/Porcello with Owens and Sims as guys knocking on the door would suddenly be halfway decent.