Manchester United manager Sir Alex Ferguson claimed that Rafael was provoked by David Luiz after the right-back was shown a red card following a clash with his compatriot in the closing stages of the Red Devils' 1-0 defeat against Chelsea.
"It was the elbows," Sir Alex told Sky Sports. "He retaliated. That's always happened. The player that retaliates always gets the bigger penalty.
"It was quite clear that Luiz has elbowed him twice actually and it's rash what he’s doing. He's a young lad and he should know better that retaliation never works."
The United boss added: "I wouldn't say it was violent conduct. The referee hasn't even seen it, I don't think he can see it at all.
"But he's gone with the fact that Luiz has rolled about on the floor and I think that's convinced him it's a red card."
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