Bacary Sagna could be charged by the FA for questioning the neutrality of referee Lee Mason.
The Manchester City defender suggested on Instagram that Mason's officiating was akin to facing a 12th man during the 2-1 win over Burnley on Monday.
Mason sent Fernandinho off in the first half of the Premier League victory at the Etihad Stadium for a lunge at Johann Berg Gudmundsson.
Manager Pep Guardiola clearly incensed by the referee's display, while Sagna went one further by posting '10 against 12.