49ers to manage Christian McCaffrey, Trent Williams workloads in training camp

It is the beginning of a new era for the 49ers’ defense.Names such as Dre Greenlaw, Talanoa Hufanga, Charvarius Ward and Javon Hargrave all exited this offseason and head coach Kyle Shanahan says that opens up the door to some young players to make their mark.“Yeah, there’s a chance we have six new guys starting,” Shanahan said Tuesday. “There’s a chance we could have eight. We’ll see how it plays out and any time you say that, that’s different. That is a different team. That is a different side of the ball so that does take some time. That’s why I’m so excited to get started with camp so we can start working that.”Shanahan added that with the veterans the team does still have, including All-Pro players Fred Warner and Nick Bosa, he does expect the rookies to be looked after well.“I think we got a lot of good vets and who have established...