Looking at the free agent list, it does look like the type of season to go with 1-2 year stop gaps rather than sign someone to a long-term deal (three years). Most likely we will see a trade or two as well. Maybe trade for a back up infielder and sign a vet outfielder to a short term deal (Granderson, Dyson, someone like that). You could probably get some decent production out of Granderson/Dyson vs RHP platooning with Pearce, and then Pearce splitting time with Morales at DH. Unless they can trade for a young outfielder, which would be preferable, but unless it's similar to the Teoscar deal where they are giving up little/nothing of value, it probably won't happen.
I don't see them trading JD until mid season if they are out of it, though.