Linebacker Colby Bockwoldt signed with the 49ers on Monday. Bockwoldt played mostly on special teams for the Titans last season after two years with the Saints, starting 16 games in 2005. The Titans and the Steelers also hoped to sign him, but Bockwoldt chose to reunite with 49ers special teams coordinator Al Everest, his coach in New Orleans for two years.