PSG prevailed on away goals, but only after Dutch referee Bjorn Kuipers had sent off Zlatan Ibrahimovic in the first half of the last-16 second-leg tie, which finished 2-2 on the night and 3-3 on aggregate at Stamford Bridge last Wednesday.
Aurier, currently out injured, declared his frustration with the decision – saying “referee, dirty son of a bitch” – and now faces the prospect of a sanction from European football’s governing body.
A UEFA statement read: “Following an investigation by the disciplinary inspector, UEFA has today announced that disciplinary proceedings have been opened against the Paris St Germain player Serge Aurier, following comments he made on social media after the UEFA Champions League Round of 16 second-leg match between Chelsea FC and Paris Saint-Germain played in London on March 11.
“Charges: Insulting acts – Art. 11(1), 11(2) and 15(1d) of UEFA disciplinary regulations.
“The case will be dealt with by the UEFA Control, Ethics and Disciplinary Body on March 19.”