For what?
Old Trafford chief Ferguson claims the Dutchman could have been killed during the incident.
“The referee has had one of those days where we’re not going to get anything off him," he told Sky Sports. "He had a shocking performance today.
"I know he’s a young referee but I was disappointed in his performance. The Robin van Persie situation is crazy, the referee clearly sees it and van Persie could have been killed.
"I think the FA have got to look into it, irrespective of the yellow card. He should be banned for a long time because that is the most dangerous thing I have ever seen on a football field for many, many years.
"It was deliberate, the whistle has gone, the game has stopped and he’s done that right in front of the referee, he could have killed the lad. It’s a disgraceful act and he should be banned for a long time.”