Auxerre manager Jean-Marc Furlan said he was sacked by the French league club after giving opposing fans the middle finger during a game.
Speaking to local newspaper L’Yonne Republicaine, Furlan said he was informed of a 10-day suspension on Tuesday.
“I understood it was before a layoff,” he said. “Club officials are using this whimsical gesture I made in Clermont as an excuse, which I deeply regret.”
Auxerre had previously apologized for the behavior of their coach. Furlan was sent off deep in added time during Auxerre’s 2-1 defeat at Clermont on Sunday.
Furlan said he had an argument with match umpire Mathieu Vernice because he felt Clermont had not been adequately punished for his fouls.
He said he made the gesture after onlookers insulted him as he stood up to speak to the referee.
In its statement released on Monday, Auxerre said Furlan’s “inappropriate attitude” was not in line with the club’s values of “respect and fair play”.
Auxerre have not won their last six league games and are 18 points behind leaders PSG in 16th place.
Furlan has become the third French league manager to be sacked this season, after Lyon’s Peter Bosz and Brest’s Michel Der Zakarian.