The Celtic player will tomorrow appear before an SFA disciplinary hearing when charges of not acting in the best interests of football by singing about Hearts' financial problems and, more seriously, bringing the game into disrepute by 'singing a song of an offensive, racist and/or discriminatory nature' about Rudi Skacel.
The incident under investigation took place before a Hearts v Hibs game at Tynecastle on March 30. Griffiths was due to appear before the SFA on April 24, but two days before this his solicitor requested the hearing be rescheduled as a separate Police Scotland investigation was still ongoing.
Celtic have also carried out their own probe into the alleged incident.
Griffiths did apologise to the club and to Hearts when the original footage of him taking part in a song about Hearts going bust became public.
The club fined him four weeks' wages, but then instigated a further investigation when the second video involving the Skacel song emerged, prompting the SFA to upgrade their charges against the player.
If found guilty at tomorrow's hearing, Griffiths could be handed a lengthy suspension, which would force him to miss the start of Celtic's domestic season in August.
However, it is understood that, because the alleged incident did not take place in the context of a match, if he is found guilty at the disciplinary hearing, Griffiths' punishment will be in the form of a fine and possibly a suspended sentence which will be triggered if there is any repeat.
On a happier note, the Parkhead club are preparing to take the Lisbon Lions and dozens of fans to Portugal for Saturday's Champions League final.
It will be the first time Europe's premier club final will have been played in Lisbon since the Hoops lifted the European Cup there in 1967.
And Celtic want supporters not fortunate enough to join Lennon and the Lions in Lisbon to enjoy the occasion at Celtic Park.
They will be showing Real Madrid v Atletico Madrid in the Kerrydale Suite.
Entry is free, and there will be a cash bar with food also available.
The doors open at 5pm, and there will be a DJ, plus competitions and raffles on the night.
For more information, or to book tickets, fans should call 0141 551 4405.