Manchester United overcame the sending-off of England defender Gary Neville to beat neighbours Manchester City 4-2 in an action-packed FA Cup fifth-round match on Saturday.Two goals by Ruud van Nistelrooy and one each for Paul Scholes and Cristiano Ronaldo put United, who played with 10 men for nearly an hour, into the quarter-finals for the first time since 1999.Man U were reduced to 10 men within minutes, Neville appearing to head-butt City’s Steve McManaman. The incident prompted angry exchanges involving players from both sides before referee Jeff Winter dismissed Neville.