In a recent interview, 49ers’ head coach Jim Harbaugh mentioned that the team might start using three receiver sets more often. The question is who will be that third wide receiver? Currently that player is Quinton Patton, but that could change. The 49ers only have five wide receivers on the roster that have any real chance of seeing the field. They will most likely add at least one more through the draft. But what about free agency? Who is left that would fit into the 49ers’ system?