Match officials have been interviewed by the Football Association over allegations from Chelsea that referee Mark Clattenburg used "inappropriate language" against John Mikel Obi, reports BBC Sport. Chelsea accused the referee of using an offensive racial term during the 3-2 defeat by Manchester United in October.
A decision on whether any action will be taken is expected early next week.
The FA is understood to have interviewed Clattenburg, his assistants and fourth official Michael Jones.
The referee denies the allegations and neither assistants Michael McDonough and Simon Long or the fourth official are understood to have heard anything that supports Chelsea's allegations.
