Ferguson said: "The crowd got Scholes that yellow card, the referee's view was blocked but he heard the crowd and showed him a card.

"And on the Ronaldo incident, Carlos Queiroz (assistant manager) has watched the video, and it was outside the box but he was definitely caught by the Everton player.

"To get a yellow card for that was ridiculous. The referee thought he might have to give a penalty kick, so he booked Ronaldo instead, it was a bad decision."

Ferguson confirmed that defender Mikael Silvestre has been taken to hospital for a scan on the knee injury that forced him to be carried off in the second-half.