Lyon manager Paulo Fonseca has been suspended from conducting his matchday duties for almost nine months for angrily confronting a referee.

Fonseca, 52, was sent off and pushed his face towards official Benoit Millot during Lyon’s 2-1 win over Brest on 2 March.

In a statement on Wednesday, the French Professional Football League said the Portuguese boss would be barred from accessing the bench, the officials’ dressing rooms, and carrying out any official functions before, during, or after matches until 30 November.

The punishment also prevents him from going to the team dressing room, pitch, tunnel and corridors leading to those areas until 15 September.

Lyon acknowledged “the extreme severity of the unprecedented sanction” and said they were concerned by the speed in which it was imposed.

The seven-time French champions, who are currently sixth in Ligue 1, added they were disappointed Fonseca was “not judged on his actions alone, an emotional reaction, without any clear intention of physically attacking the referee” and were “studying all possible avenues of appeal”.

John Textor, the Lyon owner, described the ban as “too severe” in saying that the club would stand by Fonseca.

“I stand with you today and always,” Textor wrote on Instagram.

“You made a mistake, your apology was sincere…and your punishment is clearly too severe. You are the right man for OL and we shall persevere.”

Fonseca, who apologised after the incident, only took charge of the club on 31 January after leaving AC Milan the previous month.

His side are due to face FCSB in the Europa League on Thursday (17:45 GMT).

He was sent off after a review of a potential penalty for Brest – which was not awarded – for his “intimidating attitude”, according to Millot.