Year two of the Jim Harbaugh era is almost here for the Los Angeles Chargers. The head coach has an old school offensive philosophy, something he has worked on with offensive coordinator Greg Roman for quite a while now, dating back to their time together with the San Francisco 49ers. This offseason, Harbaugh and the Chargers front office reworked their backfield, signing former Pittsburgh Steelers starter Najee Harris to be the lead back.