Coach Kyle Shanahan said after Sunday's preseason win over the Chargers that he's "a little concerned" about Kendricks' toe injury, David Lombardi of The Athletic reports.
Kendricks was initially considered questionable to return after he sustained his ankle injury in the first half of Sunday's game, but he didn't re-enter the contest. Shanahan didn't disclose the specifics of the linebacker's toe injury, but the issue may impact his availability as he competes for a role in San Francisco's defense ahead of the regular season.