SIR Alex Ferguson believes Carlos Tevez should have been shown a red card in Tuesday's heated Manchester derby at Eastlands. Tevez returned to haunt his former employers with two goals as Manchester City defeated United 2-1 in the first leg of their Carling Cup semi-final encounter, but the Argentinian frontman has been accused of making a reckless challenge on Wes Brown. His high boot caught the thigh of the United defender in a 50-50 tackle, and Ferguson believes the challenge was severe enough to warrant a dismissal. "Tevez should have been sent off really," said Ferguson. "Have you seen the tackle? He went over the top of the ball. "He didn't even get booked." Ferguson's views have emerged ahead of the return leg at Old Trafford on Wednesday, when emotions are expected to be running high. Greater Manchester Police are set to speak to both officials from clubs about not provoking any trouble.