Of course it depends on how much money it will take to sign him. But Brown is the best slot corner they have. They can live with Brown, Lewis and Awuzie at CB if they fix the problem at DT. I'd love to sign everybody, but with the CAP being what it is, they need to have priorities. Signing Brown reduces the need for a top CB in the draft - assuming Jones goes. That allows them to focus on DT where help is really needed.
But this is why I posed the question, as have others, about Amari Cooper. Paying him $19 million a year is going to force the Cowboys to let someone else go. We're talking about Byron Jones and possibly Brown. If Jones goes they must sign Brown. If they both leave then CB becomes a really high priority, possibly at the expense of DT.