Referee Mark Clattenburg should hear by the end of the week whether he is to face any action following Chelsea's allegation that he used inappropriate language to midfielder John Obi Mikel. The 37-year-old official returned to training with the top-flight Select Group of referees on Monday for the first time since Chelsea's complaint but he will miss a third weekend of Premier League matches.
A police investigation has also been taking place following a complaint made on the basis of reports.
The FA are also keen to have a swift conclusion to the case which could not be more sensitive given the recent four-match ban handed to Chelsea's captain John Terry for racist abuse.
