Szymon Marciniak will referee the match of Group C of the Champions League, scheduled at Camp Nou on Wednesday starting at 21, between Barcelona and Inter.
The Polish 'whistle' will be assisted by fellow countrymen Pawel Sokolnicki and Tomasz Listkiewicz;
the fourth man will be Tomasz Musial, with Tomasz Kwiatkowski at the Var and the English Stuart Attwell as Avar.
The match between Napoli and Ajax, valid for Group A and scheduled at the Diego Armando Maradona stadium in Naples, was instead entrusted to Felix Zwayer.
The German referee will be assisted by compatriots Stefan Lupp and Marco Achmueller.
The fourth man will be Sven Jablonski, with Harm Osmers at the Var and Marco Fritz in the role of Avar.