In theory you can keep all that cap space and take it with you into next year. I do think that they have some moves planned, but they do likely need $5 to $6 million of whatever they have for their draft class. But I also suspect they will get more space from Cam and Hill taking pay cuts.
I suspect they are looking at Samuel, Jr., Becton, and a Safety. Nick Said in addition to CB and a Guard, they want to bring MVS back, but both the team and MVS are waiting to see what kind of contract he is offered.