Based on the players that are going to be UFA's at the end of the year or players who have been in the system for a long time and yet to break in:
Smith...I know it is his first season pro but with Pickard on his heels he could be bait
Our UFA's could fetch a decent return especially if the Preds are on the outside looking in come trade deadline week. Tootoo, Hamhuis and Ellis are the most likely to be dealt. Belak and Guite only if they can get a draft pick or solid return. And Rinne should likely be locked up long term by then if he comes close to what he did last season.
Klein is the most likely RFA to be dealt if he doesn't shape up into a top 4 d.
Franson if he doesn't play substantial games should be dealt while his worth is still high