I think we'll have plenty of money to re-sign whomever we want. I am assuming, however, that Shields is done and that Peppers is done. If they are both done, that's like 18-19 million + 9 million or w/e in cap rollover + whatever increase the 2017 cap sees. CaptainWIMM is the money guru though, not me, but it seems like we could have a decent pool of cash to work with.
Lang, Perry, and Cook, all key re-signs, are already making half-way decent money and won't require some kind of enormous raise to keep. I mean they'd all take a pay hike, but nothing like rookie deal to starter money jumps. Tretter wouldn't be cheap to retain, but I'm not sure how likely it is that we'd try to keep both Tretter and Lang. Maybe I'm wrong, but that seems unlikely to me. Hyde's the only other one on that list I care about, and he won't be super expensive.