Arsenal striker Emmanuel Adebayor has apologised for his behaviour in Tuesday's Carling Cup semi-final against Tottenham when he became embroiled in a heated argument with team-mate Nicklas Bendtner.
Match referee Howard Webb took no action during the game at White Hart Lane, but the FA will look at television footage of the incident, which is reported to have been started by a head-butt by Adebayor.
"Overall I think that we should have been more calm during the game and, although I was pleased to get a goal back for the team when I came on, I am sorry for the disagreement with my team-mate Nicklas," the Togo international told the Gunners' official website.
"We are both passionate about this club and sometimes that can be projected in the wrong way.
"It was a mistake. We want to focus on the games ahead and rely on our squad's great togetherness to achieve a fantastic season.
"We are a strong unit and what happened last night against Spurs will strengthen our desire and determination to compete for other targets."
Arsenal skipper William Gallas, who had to separate the two players, had said after the game: "I don't know exactly what happened. I think everybody was disappointed with the score and they were nervous.
"They know they made a mistake and maybe they will have to go to the boss and explain why they did that. They are young and they have to understand that.
"We lost our calm. Sometimes it is difficult to be calm and it is not easy for some players to be calm. We were too nervous. We have to learn."