Porteous was dismissed just after the hour-mark for a challenge on Ross McCrorie, which resulted in a penalty kick as we were beaten 3-1 at Pittodrie.
After the game, our manager Shaun Maloney said: “For me it was incorrect, Ryan’s gone for the ball.
“For sure it’s a penalty, but the rules state that he shouldn’t send him off because he’s made an attempt for the ball. It’s disappointing because it had a big effect on the game.”
The appeal has now been submitted to the SFA, but if the red card is upheld, it means that our centre-half will miss our next three league games.
