Napoli had a great opportunity to secure a place in the last 32 of the Europa League, but failed.
“I am bitterly disappointed because we threw away a very important chance,” the coach told Mediaset Premium.
“We were able to create many chances and despite this, we went down 3-1 at one stage.
“Now we will concentrate on the final match [against Steaua], and I hope we can give our fans a nice present.
“As for the sending off? Maybe the referee did not understand Italian, but he sent me off because of my tongue.”