Rachal, 26, was the 39th overall pick in the 2008 draft out of USC, where he was a first-team All-Pac 10 performer. He started 38 games in four seasons with the 49ers, including 29 in 2009 and 2010, but quickly was relegated to backup status at right guard behind Adam Snyder last season when San Francisco cruised to a 13-3 record and the NFC West title under first-year coach Jim Harbaugh.
Rachal, 6-5, 323 pounds, is an interior lineman and he’s not going to enter a situation where he is handed a starting job. The Bears and offensive coordinator Mike Tice have a variety of players to choose from on the interior.
Looking for more info, but I think he's staying as a backup RG and Spencer moves to exclusively backup Center. Louis gets the shot at starting RG but now there is competition & depth. I think the line will be a strength, but we really need a backup swing tackle. I guess that's coming in the draft?