Bayern Munich will be backed by around 2,900 supporters inside Celtic Park.
The Bundesliga club have almost sold out their away allocation for the Champions League tie on Wednesday night.
Celtic had handed over circa 3,000 tickets to the German club for the first leg of the knockout play-off round tie in Glasgow.
And it has now been revealed that they will have just 100 fewer than that figure inside the stadium for the UEFA contest.
Celtic SLO John Paul Taylor provided the figure when asked about the number of travelling supporters travelling to Glasgow.
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It comes as official confirmation of the away allocation for Celtic fans heading to Munich next week has not yet been confirmed.
However, it's expected Celtic will be given around 3,750 tickets for the return leg on Tuesday, February 18.
UEFA rules state visiting clubs must receive a minimum of five per cent of the capacity of stadia for matches in the Champions League.
Bayern Munich's last match in the competition was in front of a capacity crowd of 75,000 at the Allianz Arena, against Slovan Bratislava.
Five per cent would mean a 3,750 ticket allocation for Celtic supporters next week.
