San Francisco head coach Kyle Shanahan said Monday that McCaffrey is dealing with knee irritation and will be managed on a day-to-day basis as Sunday's game against the Dolphins approaches, Nick Wagoner of ESPN.com reports.

Shanahan didn't say that McCaffrey was in danger of missing Sunday's game, but expect his practice reps to be managed this week, at the very least. With Elijah Mitchell (knee) slated to miss 6-to-8 weeks with an MCL injury, McCaffrey is in line to continue to lead the 49ers' ground game in the coming weeks. Meanwhile, rookies Jordan Mason and Tyrion Davis-Price are on hand as complementary options, though the 49ers could look to promote Tevin Coleman from the practice squad if they want a more battle-tested veteran behind McCaffrey.

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