Jerry Jones said the Cowboys added quarterback Luke McCown instead of Colin Kaepernick to its roster because the club is looking for someone it can develop for the future.
McCown is 36. He's a career backup with a 2-8 record.
Kaepernick is 29 with 57 career starts. He led San Francisco to Super Bowl XLVII before losing to Baltimore and followed that up by taking the 49ers to the NFC Championship game before losing to eventual champion Seattle.
"We really have our guys set in a way that Luke fit what we wanted from our third quarterback," Jones said Saturday evening.