Champ, Carter, Harris, Bolden, Moore, Carter, Adams will be back for sure. That leaves us 1 CB and 2 S short. I am not sure Bruton will be back, if he is satisfied with being a special teamer I see no reason why they wouldn't resign him, but if he wants more than that and we have seen some special teamers who do, he will go elsewhere.
Porter is gone. I am not sure if Leonhard is coming back, I believe he will be given the option of coming back and probably without attending OTAs but we will see.
I think there is a reasonably good chance we draft a CB. I wouldn't be surprised to see us pick up another veteran safety, especially if Leonhard isn't coming back or if Bruton goes elsewhere.