Should the San Diego Chargers look for another nose tackle?

Nov 24, 2013; Phoenix, AZ, USA; Indianapolis Colts nose tackle Aubrayo Franklin (97) against the Arizona Cardinals at University of Phoenix Stadium. The Cardinals defeated the Colts 40-11. Mandatory Credit: Mark J. Rebilas-USA TODAY Sports
Aubrayo Franklin
Franklin played with the Chargers a couple of seasons ago and he locked down the middle of the defense. He excelled in the middle clogging up running lanes.
He still is available in free agency and could give the team some much needed depth at the position. He likely would push Sean Lissemore for playing time as the starter on the roster.
Franklin proved his worthiness a couple of seasons ago when he was on the roster. He freed up other players on the defense to make plays. Corey Liuget played like a Pro Bowler next to him and the defense showed some nice potential with him in the middle.