Jose Maria Sanchez will be the man in the middle for Celtic against Borussia Dortmund.
The Spanish official has been tasked with refereeing the Champions League tie on Tuesday night.
Celtic head to Germany with three points from their first outing in the revamped league phase with a comfortable win over Slovan Bratislava.
Now, though, they take on runners-up from last season Dortmund at BVB Stadion.
Sanchez will lead a Spanish referee team in Germany with his assistants, Inigo Prierto and Jose Naranjo. Guillermo Cuadra is the fourth official for the fixture.
VAR will be Carlos del Cerro Grande with Portugese official Tiago Martins providing assistance in the VAR room.
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This will be the second time Sanchez has taken charge of a match involving Celtic. He previously refereed the match between Celtic and Stade Rennais back in 2019.
On that night - in a 1-1 draw in France - Sanchez produced seven yellow cards and one red.
Odsonne Edouard, Scott Brown and Ryan Christie were all cautioned for Celtic while Vakoun Bayo was sent off for two yellow cards within three minutes in the closing stages of the match.
Borussia Dortmund vs Celtic officials
Ref: Jose Maria Sanchez (ESP)
Assistant referees: Inigo Prieto (ESP), Jose Naranjo (ESP)
Fourth official: Guillermo Cuadra (ESP)
VAR: Carlos del Cerro Grande (ESP)
Assistant VAR: Tiago Martins (POR)
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