Bears running back Matt Forte is believed to have suffered an MCL sprain in his right knee, according to a league source.
Forte, though, will require further testing for he and the Bears to have a full handle on the severity of his knee injury.
He suffered the injury in the first quarter, when Kansas City Chiefs linebacker Derrick Johnson drilled him in the right knee. He was tended to on the field, and he walked off under his own power, with a slight limp.
The Bears made re-signing Forte to a contract extension its top priority. But the club and the players were unable to come to terms on a long-term deal.
Forte had 985 rushing yards, entering the game, and he was a candidate for MVP, based on his total yards from scrimmage. He had five carries for 12 yards Sunday, before leaving the game in the first quarter.