ESPNKurt Warner talks 49ers' Colin KaepernickSan Francisco Sun TimesFormer-NFL star Kurt Warner, who worked with San Francisco 49ers quarterback Colin Kaepernick in the offseason, was in attendance during the Niners second training camp practice on Sunday.Kurt Warner talked Colin Kaepernick while attending 49ers training campNiners NationKurt Warner impressed with Colin Kaepernick's progressESPN (blog)When should Colin run?