Christian McCaffrey Injury Update: 49ers coach gives devastating update

The San Francisco 49ers currently are without the services of one of the best offensive players in football.

San Francisco will miss Christian McCaffrey for at least four games after being placed on the Injured Reserve due to Achilles tendinitis. The superstar running back missed Week 2 action after being placed on the Injured Reserve, so the minimum he would have to miss is three more games.

While this is the case, it's unclear if he will miss just the four games minimum for being placed on the Injured Reserve. 49ers head coach Kyle Shanahan was asked to give an updated timeline on his recovery after San Francisco fell against the Minnesota Vikings and said it is "unknown," according to Pro Football Talk's Charean Williams.

"49ers coach Kyle Shanahan said the timeline for running back Christian McCaffrey’s return is unknown," Williams said. "'Nobody knows,' Shanahan said after the 23-17 loss to the Vikings, via David Bonilla of 49erswebzone.com. 'We’re dealing with tendinitis, so there’s not one person (who( knows. He doesn’t know. We don’t know. We can take it day by day.'

"'By putting him on IR, it’s at least four weeks, so that’ll give him some time to rest and kind of protect him from himself. Us too. No matter how he’s feeling, it’s four at the minimum.' McCaffrey has spent most of his time rehabbing since Aug. 6 because of a calf strain and Achilles tendinitis. He missed the season opener before the 49ers put him on injured reserve last week."

Unfortunately, it's unclear when the star running back will be back on the field.