I suspect that BB manages for more then the immediate moment. I suspect he will try to provide Brady good WRs for the next two to three years. He has loaded up with WRs to assist Brady in his final prime seasons. But he recognizes that this could be a one year phenomenon, given the age in the WR corps. So he might want a fellow who could help for more than one year. That will allow him to draft a guy high, next one or two drafts, and develop him without too much urgency.
So what does he have:
Branch 34
Gaffney 31
Stallworth 31
LLoyld 30
Welker 31
Edelmen 27
Slater, doesn't count
Both Stallworth 31 and Branch have seen their careers fade over the past year, somewhat. Perhaps beginning the journey Over the Hill for one or both. But Stallworth retains his speed, according to BB. OTOH, Branch has relied more on route running and quickness, rather than just good speed. Stallworth has also become a "respected vet" and lockeroom leader.
So I predict that if anyone goes, it will be Branch, even if he could contribute now, as he likely won't be here next season anyway. He may not be picked up either, and could still join the "Shadow Roster" awaiting the Phone call from BB.
The same applies to Stallworth. However, either one would contribute to the joke that is the Jesters WR corps though, so maybe both stay...
.