The referees' union has pledged its "full support" to Mark Clattenburg after Chelsea accused him of using "inappropriate language" towards Mikel John Obi and another player.

Clattenburg is waiting to hear whether the Football Association will launch an investigation into allegations he made during Manchester United's 3-2 win, with club officials briefing that one part of the allegation concerns language of a racist nature.

The 37-year-old from Gosforth was given the full backing of Prospect, who said in a statement: "Prospect is committed to helping to eradicate racism in football and in society generally.

"In the context of that commitment, Prospect is offering full support to Mark Clattenburg in relation to the allegations made against him.

"It is now important that the allegations are fully investigated through the proper process as quickly as possible.

"We will be making no further comment at this stage."