Only the Football Gods know for sure about Rico Gathers -- they may know but they're not telling. By the time he's ready to contribute, it might very well not be much before season's end or perhaps in 2018. That endless concussion didn't do his career any favors, that's for sure.
Of course, I'm assuming his long hiatus wasn't just an excuse to keep him on the roster and away from another team. Here's hoping he truly makes some impressive headway before too long if he's ever destined to become a real factor with the Cowboys. Rico's just too talented to be wasted.