Coach Doug Marrone provided the update Monday,
A.Q. Shipley Jersey, two days after Gilmore was hurt in a 30-7 preseason loss to Washington. Gilmore was drafted ninth overall out of South Carolina. And he's coming off a solid rookie season, during which he took over the responsibility as the Bills' top cornerback.
Gilmore's injury further depletes a cornerback position that already lacks experienced depth behind sixth-year player Leodis McKelvin.