After trading for an interior offensive lineman earlier this week, the 49ers are looking into another position that lacks depth -- running back.
The 49ers will host Saints free-agent running back Tim Hightower today, ESPN was first to report. Hightower, 30, spent his first three seasons in the NFL (2008-10) with the Arizona Cardinals, then missed the following three seasons after ACL surgery on his left knee led to an infection in the joint.
He regained his early form the last two seasons as Mark Ingram's backup in New Orleans. Last year Hightower (6-0, 220) rushed 133 times for 548 yards, an average of 4.