Napoli coach Luciano Spalletti was unhappy being sent off in their 0-0 draw against Roma.
Spalletti was dismissed for dissent on the day.
“I immediately want to clarify the red card incident," Spalletti told DAZN.
“I went to him to say: 'By the way, well done', he put it all together and he showed me a red card. I'm devastated, really, and perhaps even (referee Davide) Massa is sorry.
“There couldn't be any misunderstanding, I remained quiet for the whole game. [Fourth official Massimiliano] Irrati had stayed close to me for the entire game, nobody said a word, I am sorry to be sent off like this.
“To me, Massa officiated really well and we didn't cause trouble for him."
He added: “Both teams played a great game today.
“We both tried to win, without losing balance, that's why there weren't many chances.