Kanoute said he had been "provoked and insulted" during a mass brawl which erupted after the award of Lionel Messi's missed penalty. He did not mention Fabregas by name or use the word racist.
Fabregas has denied he made any racist comments and the pair have now settled their differences by telephone.
Fabregas wrote on his Twitter account after local media reported the accusation: "I want to categorically deny that I made any kind of racist insult towards any Sevilla player.
"I will not tolerate anyone accusing me of things that I'm not.
"If they are frustrated by a decision that has gone against them on the football pitch then there are others ways to deal with it.
"To cry racism is cowardly and an easy option to excuse your own poor behaviour. My conscience is completely clear. I've done nothing wrong."