Celtic are set to find out later on Monday if they will be punished by UEFA when the governing body announce the outcome of their disciplinary hearing into alleged "illicit chanting" by fans in the Europa League match against Rennes.
The hearing took place on Friday, but as it was one of more than 100 cases being dealt with by UEFA's control and disciplinary body the result has not yet been announced.
Celtic were charged after the Strathclyde Police match commander complained to the UEFA match delegate about pro-IRA chanting at the Europa League Group I game at Celtic Park on November 3, which the Hoops won 3-1.
Earlier this month Celtic escaped Scottish Premier League action over pro-IRA chanting, the league ruling the club had taken all reasonable action to prevent such "unacceptable conduct", which was reported by police following a goalless draw against Hibernian on October 29.
The lack of action is consistent with the league's stance that clubs should not be punished for the behaviour of fans if all reasonable measures had been taken to prevent it and deal with it.
But UEFA have been more willing to punish clubs and national associations in similar instances.
The European governing body have fined Rangers for "discriminatory" behaviour on three occasions, the latest offences also prompting a one-match travel ban on supporters.
The Ibrox club argued they had done everything possible to halt the singing.