The Chicago Bears have acquired cornerback Sherrick McManis from the Houston Texans in exchange for fullback Tyler Clutts.  Clutts spent the entire 2011 season with the Bears and started eight games, catching  eight passes for 48 yards and making four special-teams tackles.  McManis was a fifth-round pick of the Texans in 2010 and had 18 tackles and one interception in 23 games over the last two seasons, seeing most of his time on special teams.