The Pittsburgh Steelers have decided to make a game-time decision on Jarvis Jones.
The rookie linebacker sustained a concussion during last Sunday's win over the New York Jets and is yet to pass the league's mandatory tests to allow him to return from the injury.
The 24-year-old did not leave the contest with the concussion, having not experienced symptoms until the following day.
The Steelers face AFC North rivals the Baltimore Ravens in the NFL later today.