UEFA has opened a disciplinary case against Manchester City after City fans booed the UEFA anthem before Wednesday night's Champions League clash against Sevilla at the Etihad Stadium.
City have been charged with disrupting the competition under Article 16.2G of UEFA's disciplinary code.
UEFA, who were obliged to look into the incident after the match delegate mentioned it in his report, will judge the case on November 19.
However, Sky sources say that in all likelihood - especially as it is not the first time the anthem has been booed by City in protest at their Financial Fair Play treatment - there will be no major punishment.
Kevin De Bruyne's injury-time strike gave City a 2-1 win in their Group D clash, putting them in a good position to qualify for the knockout stages with three games remaining.