"I can't believe it, I just can't believe that one," Fergie said.
"It's one of the worst I've seen in my lifetime. Unbelievable.
"You can't appeal a yellow card. I can understand that in domestic football, it could get lost in the system.
"But in European football it is crucial because, later in the tournament, to miss a really important game because of that is unfair.
"They should look at that but they won't."