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In the game ended 4-2 to Chelsea, Rooney scored three goals. After scoring his third goal from the penalty spot in the 79th minute, Rooney celebrating a goal with his colleagues on the sidelines.
In front of a television camera, Rooney said the words did not belong.
Redknapp also thinks it is silly action, for inappropriate sentences are usually shot from the mouth of the players if you have a disappointing event, for example dikartumerah or failed to score a goal.
"I did not hear what he said because at that time I was on my way from Wigan. However, I read what the media reported," said Redknapp.
"I do not know why he did that. I do not know why young players should be so angry with the world? I do not know why. They got hundreds of thousands of pounds every week."
"I respect him as a player. However, for what he did, he was the son of stupid and he should not do that," he said.
Rooney himself has publicly admitted guilt and apologized. However, it did not make it free from the threat of a two-game suspension from the FA.