49ers coach Jim Harbaugh expects G/C Marcus Martin (knee) to miss six weeks.
The San Francisco Chronicle reports 49ers G/C Marcus Martin will be sidelined two months with a dislocated kneecap.
49ers rookie G/C Marcus Martin was carted off the field with a knee injury during Sunday's third preseason game.
49ers signed No. 70 overall pick C Marcus Martin to a four-year contract.
49ers third-round C Marcus Martin will see time at guard during OTAs.
49ers selected USC C Marcus Martin with the No. 70 overall pick in the 2014 NFL draft.
The New Orleans Times-Picayune believes it would be a "no-brainer" for the Saints to select USC C Marcus Martin at No. 58 overall, if he's available.
USC C Marcus Martin measured 6-foot-3 3/8 and 320 pounds at Thursday's NFL Combine weigh-in.
NFL Draft Insider Tony Pauline passes along "word in Mobile" that USC C Marcus Martin could be the first center selected in May's draft.