Not sure where that data comes from. As the analysis below shows, our cap situation is far from bad. Only a couple of the free agents on our roster that i even feel are nececassary to resign. Our most important players are all locked up. It isn't like we have a $20 million per year contract looming. We can't go after any big free agents but we rarely do that anyway. That being the case, our cap situation is very managable this offseason.
49ers salary cap 2015: New cap figures open the door for what to expect from San Francisco front office - Niners Nation
Nice article, with all the likely retirements and releases we will have plenty of cap space to climb out of a likely 4th place finish next year in the NFC West.