Alan Smith believes Newcastle manager Alan Pardew has sent out 'an awful message' to his players after his clash with Hull City midfielder David Meyler.
Newcastle's 4-1 win at the KC Stadium on Saturday was overshadowed by an astonishing second-half touchline incident when the Magpies boss appeared to attempt to headbutt Meyler as he retrieved the ball for a throw-in.
Pardew has since been fined £100,000 by his club and issued with a formal warning and on Monday afternoon he was charged with improper conduct by the Football Association.
The 52-year-old was sent to the stands following the altercation and Sky Sports pundit Smith admits his actions send out the wrong message to his Newcastle squad and backroom staff.
Speaking on Sky Sports News on Monday, former Arsenal and England striker Smith said: "They'll have a little giggle about it but, at the same time, if he's behaving in that fashion how can he turn around and tell his players to toe the line on the pitch?
"It sends out an awful message and strangely he wasn't that sort of player. He never got involved in those things. So he's saved it all up until he became a manager.
"In the future he's got to keep himself out of these situations.
"I'd imagine he's on his last warning. If you think of the Manuel Pellegrini incident and the Arsene Wenger one a few years ago - he has previous."
And fellow pundit Tony Cascarino added on Sky Sports News: "I was astonished and I'm certain he regrets it immensely.
"There was a slight shove by Meyler. He's crossed the line that shouldn't be crossed as a manager and he will be totally embarrassed.
"He's had a few argy-bargy moments before and the ban will be severe."
With regards to any punishment that may be meted out by the FA, Smith added: "It's unprecedented. He'll probably get five, six, seven games away from the touchline and he'll have to take a long hard look at himself.
"And I doubt if he'll appeal it - he'll just have to take the medicine."