Buff (Nelson)
NYJ (Keller is walking unless hes gets paid big time, and the new GM isn't making that mistake)
Mia (needs a whole new receiving core)
Cle (new management will most likely go w Cameron)
Oak (should resign Myers, but you never know)
NYG (almost certain they keep Bennett)
Was (FDavis injuried and Paulson is not a starting TE, either bring back Davis or buy Keller)
Chi (KDavis is awful as a starter)
Atl (Gonzo retiring but this team rarely makes FA moves, however they have a lot of draft needs. I think Keller will price himself out of Atl and they may go with one of the cheaper options)
TB (Clark is done, is Stocker ready? Another team that will most likely go though the draft instead of FA)
Zona (Housler looked ready and management claims hes ready; and even with all the needs everywhere else I wouldn't be surprised if they go after Keller so new management can make the big splash)
A few comments on this list.
You left off Pittsburgh who might be in the market dependent on where Heath Miller is in his ACL recovery.
Buf- Similar to Pittsburgh really. Chandler is not Heath Miller but solid but probably a need with his ACL.
NYJ-It's assumed Keller is gone and he wants out and the Jets are in a cap mess so it probably happens. On the other hand franchise tags for TE's are not high and Shurmur's offenses in Cleveland the last two seasons finished 5th in the NFL in TE targets and that's without a TE as good as Keller. So it's a position he seems to utilize.
CLE-don't see why new management would go with Cameron. Why? They did not pick or try to develop him. I think he makes the team but he's not really shown anything up to this point either. Very up in the air for him in terms of playing time.
OAK- new system and a little over the cap so Myers will have to be cheap, which I think he will be so I'd peg him for staying.
NYG-not so certain on Bennett. I'm more like 60-40 he's gone. As we see lot's of teams need a TE and he improved his stock. He's a UFA and the Giants just spent last year developing their TE of the future, which might be now. Marty B is going to cost more than the Giants got him for last year and want multiple years this time and I'm not certain the Giants will want to go there.
Was- you would think this is the perfect place for Fred to sign a one year deal and pick his stock back up. Keller seems like a good fit but if Casey is familiar with system.
Arizona- Keller makes no sense for them at all, none. I've actually always thought Housler was a taller/faster Keller and we know the GM is high on him. King is back to handle blocking duties and Arians offenses are extremely WR heavy. If they bring in a TE at all it's a blocking type.