Napoli coach Carlo Ancelotti says he's prepared to take his players off the field if they're subject to racist abuse.

Kalidou Koulibaly was allegedly barracked by racist taunts throughout defeat to Inter Milan.

He was booked at San Siro and reacted with sarcastic applause to the referee, prompting a red card.

Lautaro Martinez went on to win the game at the 92nd minute, creating tension that went beyond the final whistle.

“I asked the referee for information on the red cards and nothing else. Those incidents rather decided the match, as we had done very well in the second half and were pushing hard.

“We even had the chance to win it when down to 10 men, but tempers were a little raised at the end," the Coach told Sky Sport Italia.

“There was a strange atmosphere, as we asked three times for play to be suspended, they had announcements with the speaker three times. Koulibaly was certainly irritable. Usually, he is very calm and professional, but he was subjected to monkey noises throughout the game.

“We asked three times for some action to be taken, but the match continued. We keep being told play can be halted, but when? After four or five announcements? Maybe we have to take matters into our own hands next time and stop play ourselves. They'll probably make us forfeit the game if we walk off, but we are prepared to do it.

“It's not good for Italian football, seeing this."