Manchester United manager Sir Alex Ferguson has hit out at referees' chief Keith Hackett after Chelsea defender John Terry won his appeal against a weekend red card.
The Blues and England captain is now eligible to face the Red Devils at Stamford Bridge on Sunday after he won an appeal over the straight red card he was shown in last weekend's 3-1 victory at Manchester City.
Terry was shown a straight red card by referee Mark Halsey after he hauled down City striker Jo near the halfway line.
"I understand Hackett told ref Mark Halsey to rescind the card and he wouldn't. So now he is refereeing in League Two this weekend," fumed Ferguson.
"I do not understand how this has happened. If it had been a Manchester United player, Hackett would not have done this.
"This is going to have to happen all the time if a referee is considered to have made a mistake."
United will be without their own defensive cornerstone for the high-profile Premier League clash following Nemanja Vidic's own red card for two bookable offences in last weekend's 2-1 defeat at Liverpool.