Chelsea head coach Antonio Conte apologised to referee Neil Swarbrick and fourth official Lee Mason after he was sent off during Wednesday's 1-0 win over Swansea.
Chelsea remain 11 points behind leaders Manchester City after labouring to victory against the Swans through Antonio Rudiger's first league goal.
Conte was dismissed from the touchline for the first time in his Chelsea career by Swarbrick moments before half-time after furiously protesting the award of a Swansea goal kick and questioning the visitors for time wasting.
"It's right to apologise for what happened during the game," Conte said.