Manchester United manager Sir Alex Ferguson has hit out at Bolton Wanderers boss Owen Coyle, who accused Nemanja Vidic of a terrible challenge on Johan Elmander during the meeting of the two sides at the weekend.
The Serbia international's clash with Elmander left the Trotters striker needing five stitches in a head wound and earned the wrath of a livid Coyle.
He said after the 4-0 home drubbing: "I can only assume the referee hasn't seen it.
"Vidic has caught him with an elbow, there was blood pouring out of it. I'm not looking for excuses, but anyone who's seen it knows it was a terrible challenge."
Ferguson responded by telling reporters: "What is the old saying about people in glass houses?
"When Nemanja Vidic came off at half-time he had a lump on his head the size of an egg, his cheek was swollen and he had a black eye.
"I would have been amazed if the FA had charged him, because clearly his eyes were on the ball.
"There was no intent there whatsoever. I don't think he knew an opponent was there or who it was."