Chelsea interim manager Rafael Benitez has insisted that he is not worried about jeers from the club's fans.
"I have said before that I am just concentrating on my job," BBC Sport quotes him as saying. "I try to stay really focused and I can guarantee Juan Mata changed the game when he came on.
"The club said they wanted a manager with experience and I will try to do my job."
Chelsea are currently third in the Premier League.