Harris missed Wednesday's practice due to knee soreness, Nick Wojton of USA Today reports.
Harris logged some time on a stationary bike off to the side during practice, but he hasn't yet returned to the field since injuring his knee earlier this week. He may have avoided a serious issue, but Buffalo's coaching staff could still opt for caution and hold the veteran running back out of Saturday's preseason game against the Colts. Harris joined the Bills on a one-year contract this offseason and is expected to work toward the top of the backfield depth chart when healthy.