Neil Lennon has been issued a notice of complaint by the Scottish Football Association over his use of abusive language during Celtic's 1-1 draw with St Mirren on Sunday.
Lennon has been charged and could face a three-match touchline ban for "failure to behave in a responsible manner as an occupant of the technical area by repeated use of offensive, insulting and abusive language" after his voice was allegedly picked up by television microphones.
The Celtic boss was furious with referee John Fleming after the game at St Mirren Park, describing his performance as "appalling".
He said: "You can’t get so many big decisions so wrong, it is incredible. St Mirren should have had a penalty. You don’t get many as clear-cut, so we dodged a bullet there.
"Then I see [Beram] Kayal getting wrestled into the advertising hoardings in front of the linesman and no free-kick is given. Two seconds later, I’ve got a man sent off for nothing.
"The penalty St Mirren got was outside the box. There was no contact.
"I’m delighted we got a point, but the referee’s decisions ruined what could have potentially been a very good game. I’d like to think I’ll have a chat with John."
Lennon has been given until April 10 to answer the complaint and could face a hearing eight days later if he does not plead guilty to the charge.