Manchester City's Samir Nasri and Arsenal's Emmanuel Frimpong will not face action over their row in the tunnel after Tuesday's Carling Cup tie.
The pair clashed verbally after City's 1-0 victory at Emirates Stadium but the incident has not been reported to the Football Association.
Nasri and Frimpong were involved in a heated exchange at the final whistle.
"It was handbags but they didn't even touch," said an Arsenal spokesman. "Words were exchanged - that was that."
He added: "Sami was speaking in French and Mani wasn't.
"There were no punches thrown but there was a lot of noise."
During the match, Nasri was given a torrid time by the Gunners' fans on his first return to Arsenal since his summer move to City.
Manchester City boss Roberto Mancini said: "For him, it is better that he played tonight so when he comes back to play here in the league he knows what will happen."
At the time Nasri left Arsenal, Gunners midfielder Jack Wilshere tweeted: "Good luck to my friend @Nanas08 (mr Nasri) learnt a lot from him. World class player! Will be missed!"
But Frimpong reacted by tweeting: "'Pffffff come on Jack."