San Francisco 49ers head coach Kyle Shanahan shared some encouraging news of Christian McCaffrey‘s injury. He told reporters on Wednesday that the superstar running back will be limited in practice after missing the team’s season opener against the New York Jets on Monday night due to an injured Achilles and calf. Shanahan said McCaffrey is not considered a candidate for injured reserve. The news ofMcCafrrey not playing on Monday night surprised many as there was no indication he would be inactive. When speaking to reporters on Wednesday, the Stanford alum revealed when he knew he wasn’t going…