Probably a cheap running back since we need to fill that starter position. The only other need-to-fill spot at the moment because of free agency is center, but we might go with Hoffman as the place-holder there.
The team will probably restructure a deal in order to create the cap room, although it may already have enough for what it is willing to pay.
We've lost two DEs (Armstrong and Fowler), but we've got Lawrence, Parsons and Williams and probably Fehoko and Golston will be played at end in Zimmer's scheme, so I don't see the team having any urgency there.