Chelsea midfielder Oriol Romeu has told The Guardian that Juan Mata didn"t hear Mark Clattenburg"s alleged racist comments during the Chelsea versus Manchester United game at Stamford Bridge on Sunday afternoon. Chelsea have lodged a formal complaint with the football association, claiming that referee Mark Clattenburg racially abused John Obi Mikel and made a xenophobic comment to Juan Mata.

Romeu today revealed that Mata hadn"t heard the alleged comments;

"Neither Juan nor Fernando [Torres] told me they heard it because from what I have understood they didn"t hear anything. It was someone else who heard it, but not directly at them. It was another player who heard it and that is what they told me. I didn"t hear anything as I left quickly to go home, but after talking to Juan he told me there was some problem and he had to stay.

"I only know Chelsea made a complaint and I think there could really be a problem if what Chelsea players say happened really happened. If there was really a racist comment or something said against a Spanish player this will be serious. We know in this country people are very vigilant about these issues."