Andre Villas-Boas complained to referees' chief Mike Riley about the performance of the officials in Chelsea's 3-1 Premier League defeat at Manchester United. Chelsea fell 2-0 behind at Old Trafford on Sunday to goals which replays showed should not have stood as both scorers had been offside.
Villas-Boas said on Tuesday: "Very, very unhappy with a poor performance from the referees, which in the end had a decisive role in the result, and I don't take it very, very lightly.
"You expect the linesman to do his job.
"I already went further ahead with the situation by speaking to the correct people.
"We all feel very, very down when the referee had such an impact on the result."
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