Pep Guardiola has apologised after Manchester City fans chanted about football stadium tragedies during Sunday's game at Liverpool but added he had not heard the chants himself.
But Guardiola, who has said coins were thrown at him, added he was "pretty sure" the rivalry had not become toxic.
"I didn't hear the chant. If it happened I'm so sorry," he said.
"It doesn't represent what we are as a team and a club if this happened.
"But don't worry, we can behave perfectly [after] our mistakes, without a problem."
During a fiery game, Liverpool saw manager Jurgen Klopp sent off and later charged by the Football Association for berating a referee's assistant when a foul was not given for a challenge on Mohamed Salah.