Montgomery is slated to have an MRI on his left knee Monday, Ian Rapoport of NFL Network reports.

At the time Montgomery departed Sunday's 24-14 win against the Lions, he had 23 carries for 106 yards and two touchdowns. Initial tests have revealed that he suffered a hyperextension, but the upcoming MRI may provide further clarity about the severity and potential absence. If Montgomery is forced to miss time, veteran Damien Williams should take over lead-back duties for the Bears, with rookie Khalil Herbert available for complementary work.

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