"[Head athletic trainer Jeff Ferguson] didn't give me an exact date because we don't know exactly with Reuben," Shanahan said. "We're going to put him in a boot here for a little bit but those tend to be a month, a little more, but I can't put exactly a date on it. That's my experience with high-ankle sprains."
Shanahan also stated that he was not given a grade regarding the injury. The head coach was also asked what he thought of Foster's performance prior to the injury.
"He was playing well," Shanahan answered. "He was around the ball a ton. Got close to a pick. Was near another one. Made a good play in the screens right before he got hurt. Ripped the ball out there. Got it loose at the end. [Panthers running back Christian] McCaffrey's knee was down but he was playing well."
According to Shanahan, Foster was the only "big" injury that resulted from the 49ers' Week 1 game. That means other injuries, like the one to fullback Kyle Juszczyk, were minor.
"A bunch of guys were sore," Shanahan said. "Some wear and tear. Typical Monday. But Reuben was the only big one."
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