I am sorry gents, but if the sox do somehow fall out of the WC race, there isn't much to move on from.
Porcello is a FA, but with the way he has pitched this year, you'll get a C level prospect for him and you'd have to eat some money.
Betts isn't gonna get moved, not with the money on the board for 2020. They'll try to reload for 2020 and start anew
JDM, presumably, wouldn't be having a great year if the sox were out of it. Hence, he wouldn't be opting out. He would likely be on the docket for 2020, so you don't deal him. I would only consider dealing him if the sox are sucking and JDM is dominating making an opt out likely
You're not moving Eovaldi, Price, or Sale. You could consider moving ERod, but with how bad he has been and with him arb controllable for 2020, you don't move him.
You can move on from JBJ, but he is pretty much untradeable right now. He is worth way less than the contract he has and with how bad he has been, most teams wouldn't offer him arbitration.
Nunez is useless. Holt is pretty much useless right now. You aren't moving Vasquez and you already know Leon isn't worth s***.
Moreland is probably your most tradeable player, assuming he can get healthy. But the 1b/DH spot is going to be well represented on the market with Carlos Santana and Edwin Encarnacion likely on the move. Therefore, Moreland's return will suffer from a large supply.
Pearce isn't tradeable.
If you're planning on contending in 2020 (hint: you are), then you don't move any pen pieces since they are all controllable for 2020.
You're not moving Devers, Bogey or Chavis.
Ultimately, there is no fire sale. You don't have the expiring contracts of great players to dangle out there. You aren't looking at a 2020 rebuild. You won't be putting anything onto the market that is going to return something to you. Hence, your team is not going to sell until 2020 and that is only if they suck this year and next, which they wont