(Undated)  --  A new report says the Seattle Seahawks are unlikely to sign free-agent quarterback Colin Kaepernick.  Former NFL assistant coach and executive Pat Kirwan, who now works for Sirius XM NFL Radio, reports he doesn't expect Kaepernick to be signed by the Seahawks.  Kirwan is a longtime colleague of Seattle head coach Pete Carroll.  The "Seattle Times" reports Kaepernick visited the Seahawks last week with fellow free agent quarterback Austin Davis.