ESPNFC:
Chelsea lodged a formal complaint with the Football Association on Wednesday over "inappropriate language" that the club claims referee Mark Clattenburg used against John Obi Mikel during a Premier League match between the Blues and Manchester United.
Just sounds like sour grapes to me. "Inappropriate language"? Give me a break. With the amount of abuse the refs have to put up with from so called professional players and the fans, it wouldn't bother me if he gave some stick back.
Chelsea is just whining