running back suffered a concu sion during the fourth quarter of the team's Week 9 lo s against the .Bears coach Davis Bertans Jersey Matt Nagy on Monday confirmed the injury, telling local reporters that Montgomery has . He will have to be cleared by an independent neurologist in order to participate in practice and/or next week's game against the division rival Otto Porter Jr. Jersey . He has an extra day to do so, because the Bears-Vikings game is on "Monday Night Football."Montgomery has operated John Wall Jersey as the team's lead back for most of the season, and has been getting the significant majority of the snaps since tore his ACL in Week 3. Before being injured on Sunday, Montgomery had been on the field for at least 80 percent of Chicago's snaps in five consecutive Troy Brown Jr. Jersey games.In Montgomery's absence, the Bears relied on and at running back. If he has to mi s time, it's likely those two players will see a bunch of the snaps, though the Bears could also elevate practice squad running back , who has not played in the NFL since Russell Westbrook Jersey tearing his ACL last offseason.