The FA said there was "no case to answer" over allegations Clattenburg said "shut up you monkey" to the Nigeria midfielder during Chelsea's 3-2 Premier League defeat by Manchester United at Stamford Bridge on October 28.
However, an FA statement said the complaint by Mikel's Brazilian team-mate Ramires had been made in good faith.
But the FA did charge Mikel for an alleged use of threatening and/or abusive and/or insulting words and/or behaviour in or around the match officials' changing room following the match.
Source: AFP
Source: AFP