Burnley manager Brian Laws felt Clarke Carlisle's dismissal in the 1-1 draw at Millwall was "very harsh" and may launch an appeal.
Carlisle saw red after just seven minutes for a late challenge on Theo Robinson but Laws was quick to defend the centre-half.
He said: "It wasn't a sending-off. I thought it was very harsh.
"I don't know whether the referee has been given a message to stamp down on any challenges whatsoever, but the first five minutes? Clarke's clearly not caught the player and his challenge was low.
"We've got to take a stern look at it and if we make the decision to go with the appeal then we've got to go with it. Maybe we take the risk but I don't want to lose him for four games."
The Clarets responded well to the early setback and took the lead through Jay Rodriguez's header before Scott Barron levelled with a low drive.