Arsenal kickstarted their Barclays Premier League campaign as they blew West Ham away with a 5-1 victory at the Emirates Stadium tonight.
Arsenal manager Arsene Wenger said if a football manager goes "overboard" on the touchline they should be "punished".
"The rules are the rules", he added.
The Arsenal boss Arsene Wenger has said football managers should be punished if they argue with officials.
He was asked about the issue after Manchester United's Sir Alex Ferguson argued with a referee during a game on Boxing Day.
Ferguson wasn't punished for the incident but Wenger believes managers should face sanctions if they go overboard
In today's early Premier League kick off, Arsenal took on Manchester United.
It got off to a bad start for the Gunners, when their former striker Robin van Persie scored just three minutes into the game.
Patrice Evra added to Man U's tally in the second half, before things went from bad to worse for Arsenal, when Jack Wilshere was sent off. The Gunners managed to pull one back in the dying seconds of the game, but it was too little, too late.
Final score: Manchester United 2 - 1 Arsenal
Arsene Wenger has said he has not yet begun negotiations on signing a new contract as Arsenal manager.
The club's chief executive said yesterday that he wants Wenger to stay on after his current contract runs out in two years' time. But the manager today said he would not rush into a decision and would look at his own performance before deciding if he wants to stay.
Arsenal Manager Arsene Wenger speaking at a press conference earlier today.