Agreed. I think them looking at CB isn’t about Jackson, it’s about uncertainty around White.
My money is they draft a kid who can play CB AND safety. If White comes back and over the next few years shows no ill signs from his ACL, then the rookie stays at Safety where he replaces Hyde or Poyer. If White isn’t the same player athletically, then he moves to safety (where he would be elite as hell) and the rookie stays at CB where he is paired with under-rated-as-hell Dane Jackson.