Albion will have a Ukrainian referee as they take on Marseille.
Mykola Balakin will take the whistle at the Stade Velodrome, assisted by compatriots Oleksandr Berkut and Dmytro Zaporozhenko.
Piotr Lasyk, from Poland, is the VAR, assisted by Tomasz Kwiatkowski.
Balakin, 34 comes from Kyiv and has refereed World Cup and Euro qualifiers, most recently San Marino v Slovenia.
On the club front, he has taken two European ties this season.
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