Last updated at 1 hour ago.
The Football Association is looking into whether or not the amount of substitute players used in the FA Cup win over Bradford City was excessive.
Josh Key was brought in at the start of extra time.
The FA Cup rules allow clubs to bring on five players during a game, with a sixth allowed for a concussion.
A review is due to take place after the FA Cup game between the two teams at St James Park.
The number of substitutions allowed during the match will be considered by the FA committee.
The referee and fourth official will be asked for their comments. The matter will be referred to an FA committee who will make a decision.
The FA's Professional Game Board will decide on any punishment if a club plays an ineligible player.
The rules state that if the club is able to satisfy the Professional Game Board that it did not know that the player was ineligible, the club will not be held responsible.
The second round of the competition will be played on Saturday, 4 December.
