The starting options via free agency strike me as less than tantalizing. Scherzer is obviously the king, but is 37. There are a few other good ones that I have opinions on both ways like Stroman and Gausman, but how many years should the Sox commit to for either of these guys?
The reliever market, on the other hand, at the very least will require fewer years of commitment.
The trade market is probably one of the more likely options. But who will be the sox trade bait to get a good starter or reliever? I think Jarren Duran is probably high on the list, simply because it's very possible there is no real role for him in Boston even if Schwarber does not come back. If the Sox keep Kike in CF, then Duran does become expendable. And that he makes no money means he is not priced out of any team's budget.
When it comes to adding a starter, the first place the Sox need to look is Oakland, who is going to have a boatload of arbitration cases and will probably look to move a few. Their arbitration-eligible players include Frankie Montas, Sean Manaea, and Chris Bassitt just from the rotation. Also, they will have to deal with closer Lou Trivino, 3B Matt Chapman, 1B Matt Olson, RF Ramon Laureano, and Util Chad Pinder. No way they even try to sign them all. There is a reason they went all in on Starling Marte at the deadline; they knew this team was breaking up.
That Marte is leaving and Laureano is on the block does potentially mean that Jarren Duran should certainly be a player who garners some interest...