Manchester United will launch an appeal after Rafael Da Silva was booked during the midweek Carling Cup win at Barnsley.
United insist Rafael was the victim of mistaken identity and it should have been Fabio da Silva who was shown the yellow card.
Both Da Silva twins challenged Barnsley's Jamal Campbell-Ryce in the 83rd minute of the fourth round clash, resulting in the Tykes substitute being tripped.
Referee Chris Foy showed a yellow card to Fabio but television replays later confirmed it was Rafael who had committed the foul.
The appeal will be heard on Tuesday by a regulatory commission.
"We are in discussions with the FA over this matter," confirmed a United spokesman.
"We have pointed out that the referee made a mistake on the night and we obviously want it to be corrected. We will be asking for further advice on how best to rectify the situation."