The Indianapolis Colts announced the inconspicuous signing of free-agent running back Abou Toure on Tuesday, but added that ball-carrier Tyler Varga was placed on the reserve/retired list.
Stephen Holder of the Indianapolis Star reported Varga, 22, was initially put on the "did not report" list, which was thought to be a harbinger of his decision to retire.
As was reported by the Indianapolis Star's Zak Keefer, Varga suffered a concussion last season that lasted four months. It's unclear whether Varga's retirement decision is linked to the head injury, but he did, from Holder's understanding, pass concussion protocol this offseason.