SC Young Boys – RB Leipzig
Referee: Enea Jorgji (ALB, photo)
Assistant Referee 1: Denis Rexha (ALB)
Assistant Referee 2: Ridiger Çokaj (ALB)
Fourth Official: Florian Lata (ALB)
VAR: Marco Guida (ITA)
AVAR: Rob Dieperink (NED)
Referee Observer: Roberto Rosetti (ITA)
AC Milan – Newcastle FC
Referee: Jose Sanchez Martinez (ESP)
Assistant Referee 1: Raul Cabanero Martinez (ESP)
Assistant Referee 2: Inigo Prieto Lopez (ESP)
Fourth Official: Cesar Soto Grado (ESP)
VAR: Alejandro Hernandez Hernandez (ESP)
AVAR: Marco Fritz (GER)
Referee Observer: Martin Ingvarsson (SWE)
Feyenoord Rotterdam – Celtic FC
Referee: Irfan Peljto (BIH)
Assistant Referee 1: Senad Ibrisimbegović (BIH)
Assistant Referee 2: Davor Beljo (BIH)
Fourth Official: Miloš Gigović (BIH)
VAR: Ivan Bebek (CRO)
AVAR: Alper Ulusoy (TUR)
Referee Observer: Manuel Diaz Vega (ESP)
Lazio – Atletico de Madrid
Referee: Slavko Vinčić (SVN)
Assistant Referee 1: Tomaž Klančnik (SVN)
Assistant Referee 2: Andraž Kovačič (SVN)
Fourth Official: Rade Obrenovič (SVN)
VAR: Nejc Kajtazovič (SVN)
AVAR: Bastian Dankert (GER)
Referee Observer: Markus Nobs (SUI)
Paris St. Germain – Borussia Dortmund
Referee: Jesus Gil Manzano (ESP)
Assistant Referee 1: Diego Barbero Sevilla (ESP)
Assistant Referee 2: Angel Nevado Rodriguez (ESP)
Fourth Official: Jose Munuera Montero (ESP)
VAR: Juan Martinez Munuera (ESP)
AVAR: Stuart Attwell (ENG)
Referee Observer: Stavros Tritsonis (GRE)
Manchester City – Crvena Zvezda
Referee: Joao Pinheiro (POR)
Assistant Referee 1: Bruno Jesus (POR)
Assistant Referee 2: Luciano Maia (POR)
Fourth Official: Claudio Pereira (POR)
VAR: Tiago Martins (POR)
AVAR: Pol van Boekel (NED)
Referee Observer: Uno Tutk (EST)
FC Barcelona – Royal Antwerp
Referee: Radu Petrescu (ROU)
Assistant Referee 1: Radu Ghinguleac (ROU)
Assistant Referee 2: Mircea Grigoriu (ROU)
Fourth Official: Marcel Birsan (ROU)
VAR: Cătălin Popa (ROU)
AVAR: Ovidiu Haţegan (ROU)
Referee Observer: Vlado Svilokos (CRO)
Shakhtar Donetsk – FC Porto
Referee: Davide Massa (ITA)
Assistant Referee 1: Filippo Meli (ITA)
Assistant Referee 2: Stefano Alassio (ITA)
Fourth Official: Matteo Marcenato (ITA)
VAR: Aleandro Di Paolo (ITA)
AVAR: Massimiliano Irrati (ITA)
Referee Observer: Levan Paniashvili (GEO)
20 September 2023
Galatasaray – FC Copenhagen
Referee: Georgi Kabakov (BUL)
Assistant Referee 1: Martin Margaritov (BUL)
Assistant Referee 2: Diyan Valkov (BUL)
Fourth Official: Georgi Ginchev (BUL)
VAR: Ivaylo Stoyanov (BUL)
AVAR: Dragomir Draganov (BUL)
Referee Observer: Leslie Irvine (NIR)
Real Madrid – Union Berlin
Referee: Espen Eskas (NOR)
Assistant Referee 1: Jan Engan (NOR)
Assistant Referee 2: Isaak Bashevkin (NOR)
Fourth Official: Kristoffer Hagenes (NOR)
VAR: Massimiliano Irrati (ITA)
AVAR: Tiago Martins (POR)
Referee Observer: Nicola Rizzoli (ITA)
Bayern München – Manchester United
Referee: Glenn Nyberg (SWE)
Assistant Referee 1: Mahbod Beigi (SWE)
Assistant Referee 2: Andreas Söderqvist (SWE)
Fourth Official: Adam Ladebäck (SWE)
VAR: Pol van Boekel (NED)
AVAR: Alejandro Hernandez Hernandez (ESP)
Referee Observer: Lucilio Batista (POR)
Sevilla FC – RC Lens
Referee: Tobias Stieler (GER)
Assistant Referee 1: Christian Gittelmann (GER)
Assistant Referee 2: Mark Borsch (GER)
Fourth Official: Martin Petersen (GER)
VAR: Bastian Dankert (GER)
AVAR: Nejc Kajtazovic (SVN)
Referee Observer: Dejan Filipovic (SRB)
Arsenal FC – PSV Eindhoven
Referee: Felix Zwayer (GER)
Assistant Referee 1: Stefan Lupp (GER)
Assistant Referee 2: Eduard Beitinger (GER)
Fourth Official: Sven Jablonski (GER)
VAR: Marco Fritz (GER)
AVAR: Juan Martinez Munuera (ESP)
Referee Observer: Alexandru Deaconu (ROU)
SC Braga – SSC Napoli
Referee: Serdar Gözübüyük (NED)
Assistant Referee 1: Erwin Zeinstra (NED)
Assistant Referee 2: Johan Balder (NED)
Fourth Official: Marc Nagtegaal (NED)
VAR: Dennis Higler (NED)
AVAR: Rob Dieperink (NED)
Referee Observer: Rune Pedersen (NOR)
Real Sociedad – Inter Milano
Referee: Michael Oliver (ENG)
Assistant Referee 1: Stuart Burt (ENG)
Assistant Referee 2: Daniel Cook (ENG)
Fourth Official: Andrew Madley (ENG)
VAR: Stuart Attwell (ENG)
AVAR: Ivan Bebek (CRO)
Referee Observer: Tomasz Mikulski (POL)
SL Benfica – FC Salzburg
Referee: Halil Meler (TUR)
Assistant Referee 1: Mustafa Eyisoy (TUR)
Assistant Referee 2: Kerem Ersoy (TUR)
Fourth Official: Arda Kardeşler (TUR)
VAR: Alper Ulusoy (TUR)
AVAR: Abdulkadir Bitigen (TUR)
Referee Observer: William Young (SCO)
Referee: Enea Jorgji (ALB, photo)
Assistant Referee 1: Denis Rexha (ALB)
Assistant Referee 2: Ridiger Çokaj (ALB)
Fourth Official: Florian Lata (ALB)
VAR: Marco Guida (ITA)
AVAR: Rob Dieperink (NED)
Referee Observer: Roberto Rosetti (ITA)
AC Milan – Newcastle FC
Referee: Jose Sanchez Martinez (ESP)
Assistant Referee 1: Raul Cabanero Martinez (ESP)
Assistant Referee 2: Inigo Prieto Lopez (ESP)
Fourth Official: Cesar Soto Grado (ESP)
VAR: Alejandro Hernandez Hernandez (ESP)
AVAR: Marco Fritz (GER)
Referee Observer: Martin Ingvarsson (SWE)
Feyenoord Rotterdam – Celtic FC
Referee: Irfan Peljto (BIH)
Assistant Referee 1: Senad Ibrisimbegović (BIH)
Assistant Referee 2: Davor Beljo (BIH)
Fourth Official: Miloš Gigović (BIH)
VAR: Ivan Bebek (CRO)
AVAR: Alper Ulusoy (TUR)
Referee Observer: Manuel Diaz Vega (ESP)
Lazio – Atletico de Madrid
Referee: Slavko Vinčić (SVN)
Assistant Referee 1: Tomaž Klančnik (SVN)
Assistant Referee 2: Andraž Kovačič (SVN)
Fourth Official: Rade Obrenovič (SVN)
VAR: Nejc Kajtazovič (SVN)
AVAR: Bastian Dankert (GER)
Referee Observer: Markus Nobs (SUI)
Paris St. Germain – Borussia Dortmund
Referee: Jesus Gil Manzano (ESP)
Assistant Referee 1: Diego Barbero Sevilla (ESP)
Assistant Referee 2: Angel Nevado Rodriguez (ESP)
Fourth Official: Jose Munuera Montero (ESP)
VAR: Juan Martinez Munuera (ESP)
AVAR: Stuart Attwell (ENG)
Referee Observer: Stavros Tritsonis (GRE)
Manchester City – Crvena Zvezda
Referee: Joao Pinheiro (POR)
Assistant Referee 1: Bruno Jesus (POR)
Assistant Referee 2: Luciano Maia (POR)
Fourth Official: Claudio Pereira (POR)
VAR: Tiago Martins (POR)
AVAR: Pol van Boekel (NED)
Referee Observer: Uno Tutk (EST)
FC Barcelona – Royal Antwerp
Referee: Radu Petrescu (ROU)
Assistant Referee 1: Radu Ghinguleac (ROU)
Assistant Referee 2: Mircea Grigoriu (ROU)
Fourth Official: Marcel Birsan (ROU)
VAR: Cătălin Popa (ROU)
AVAR: Ovidiu Haţegan (ROU)
Referee Observer: Vlado Svilokos (CRO)
Shakhtar Donetsk – FC Porto
Referee: Davide Massa (ITA)
Assistant Referee 1: Filippo Meli (ITA)
Assistant Referee 2: Stefano Alassio (ITA)
Fourth Official: Matteo Marcenato (ITA)
VAR: Aleandro Di Paolo (ITA)
AVAR: Massimiliano Irrati (ITA)
Referee Observer: Levan Paniashvili (GEO)
20 September 2023
Galatasaray – FC Copenhagen
Referee: Georgi Kabakov (BUL)
Assistant Referee 1: Martin Margaritov (BUL)
Assistant Referee 2: Diyan Valkov (BUL)
Fourth Official: Georgi Ginchev (BUL)
VAR: Ivaylo Stoyanov (BUL)
AVAR: Dragomir Draganov (BUL)
Referee Observer: Leslie Irvine (NIR)
Real Madrid – Union Berlin
Referee: Espen Eskas (NOR)
Assistant Referee 1: Jan Engan (NOR)
Assistant Referee 2: Isaak Bashevkin (NOR)
Fourth Official: Kristoffer Hagenes (NOR)
VAR: Massimiliano Irrati (ITA)
AVAR: Tiago Martins (POR)
Referee Observer: Nicola Rizzoli (ITA)
Bayern München – Manchester United
Referee: Glenn Nyberg (SWE)
Assistant Referee 1: Mahbod Beigi (SWE)
Assistant Referee 2: Andreas Söderqvist (SWE)
Fourth Official: Adam Ladebäck (SWE)
VAR: Pol van Boekel (NED)
AVAR: Alejandro Hernandez Hernandez (ESP)
Referee Observer: Lucilio Batista (POR)
Sevilla FC – RC Lens
Referee: Tobias Stieler (GER)
Assistant Referee 1: Christian Gittelmann (GER)
Assistant Referee 2: Mark Borsch (GER)
Fourth Official: Martin Petersen (GER)
VAR: Bastian Dankert (GER)
AVAR: Nejc Kajtazovic (SVN)
Referee Observer: Dejan Filipovic (SRB)
Arsenal FC – PSV Eindhoven
Referee: Felix Zwayer (GER)
Assistant Referee 1: Stefan Lupp (GER)
Assistant Referee 2: Eduard Beitinger (GER)
Fourth Official: Sven Jablonski (GER)
VAR: Marco Fritz (GER)
AVAR: Juan Martinez Munuera (ESP)
Referee Observer: Alexandru Deaconu (ROU)
SC Braga – SSC Napoli
Referee: Serdar Gözübüyük (NED)
Assistant Referee 1: Erwin Zeinstra (NED)
Assistant Referee 2: Johan Balder (NED)
Fourth Official: Marc Nagtegaal (NED)
VAR: Dennis Higler (NED)
AVAR: Rob Dieperink (NED)
Referee Observer: Rune Pedersen (NOR)
Real Sociedad – Inter Milano
Referee: Michael Oliver (ENG)
Assistant Referee 1: Stuart Burt (ENG)
Assistant Referee 2: Daniel Cook (ENG)
Fourth Official: Andrew Madley (ENG)
VAR: Stuart Attwell (ENG)
AVAR: Ivan Bebek (CRO)
Referee Observer: Tomasz Mikulski (POL)
SL Benfica – FC Salzburg
Referee: Halil Meler (TUR)
Assistant Referee 1: Mustafa Eyisoy (TUR)
Assistant Referee 2: Kerem Ersoy (TUR)
Fourth Official: Arda Kardeşler (TUR)
VAR: Alper Ulusoy (TUR)
AVAR: Abdulkadir Bitigen (TUR)
Referee Observer: William Young (SCO)