LONDON (Reuters) – Manchester United manager Alex Ferguson has rounded on critics of goalkeeper David De Gea, calling them “idiots”. The 22-year-old Spaniard was lambasted for failing to deal with a cross that led to an injury-time equaliser for Tottenham Hotspur in Sunday’s 1-1 Premier League draw. “It’s been over the top. It is always over the top when it comes to criticism here,” Ferguson, whose team face Fulham in the FA Cup on Saturday, was quoted as saying on the BBC. “You have to listen to …