Niners may be on the fence about keeping Pro Bowl guard Mike Iupati

Daily 49ers blog for NBC Bay Area website: Mike Iupati is an unrestricted free agent, and it's hard to know whether the 49ers think it's worth the investment to keep him. http://www.nbcbayarea.com/news/sports/Niners-Have-Big-Decision-to-Make-on-Mike-Iupati-287660611.html