... the outcome of the Football Association's investigation into Chelsea's complaint of inappropriate language should be known by the end of the week.
Chelsea have alleged that Clattenburg used a term understood to have been interpreted as racist towards John Obi Mikel during the Premier League match against Manchester United on October 28.
The official strenuously denies having done so.
Clattenburg and referees chief Mike Riley have decided jointly that he should not be in charge of matches while the case has been ongoing.
A police investigation has also been taking place following a complaint made on the basis of reports.
The governing body have spoken to Clattenburg, assistant referees Michael McDonough and Simon Long and fourth official Michael Jones.
It is believed all the other officials, who were wired up together with Clattenburg, have said they did not hear any use of the term alleged by Chelsea.
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.