Tottenham Hotspur – Wolfsberger AC
Referee: Matej Jug (SVN, photo)
Assistant Referee 1: Matej Žunič (SVN)
Assistant Referee 2: Robert Vukan (SVN)
Fourth Official: Slavko Vinčić (SVN)
VAR: Marco Di Bello (ITA)
AVAR: Jure Praprotnik (SVN)
Referee Observer: William Young (SCO)
AFC Ajax – LOSC Lille
Referee: William Collum (SCO)
Assistant Referee 1: Francis Connor (SCO)
Assistant Referee 2: David McGeachie (SCO)
Fourth Official: Mattias Gestranius (FIN)
VAR: Christopher Kavanagh (ENG)
AVAR: Craig Pawson (ENG)
Referee Observer: Nikolai Levnikov (RUS)
Shakhtar Donetsk – Maccabi Tel Aviv
Referee: Jose Sanchez Martínez (ESP)
Assistant Referee 1: Raul Cabanero Martinez (ESP)
Assistant Referee 2: Inigo Prieto Lopez (ESP)
Fourth Official: Jose Munuera Montero (ESP)
VAR: Ricardo De Burgos Bengoechea (ESP)
AVAR: Guillermo Cuadra Fernandez (ESP)
Referee Observer: Tomasz Mikulski (POL)
SSC Napoli – Granada CF
Referee: Daniel Siebert (GER)
Assistant Referee 1: Jan Seidel (GER)
Assistant Referee 2: Dominik Schaal (GER)
Fourth Official: Daniel Schlager (GER)
VAR: Christian Dingert (GER)
AVAR: Bibiana Steinhaus (GER)
Referee Observer: Martin Hansson (SWE)
TSG Hoffenheim – Molde FK
Referee: Aleksei Kulbakov (BLR)
Assistant Referee 1: Dzmitry Zhuk (BLR)
Assistant Referee 2: Aleh Maslianka (BLR)
Fourth Official: Vladimir Moskalev (RUS)
VAR: Vitali Meshkov (RUS)
AVAR: Sergei Ivanov (RUS)
Referee Observer: Stefan Messner (AUT)
Villarreal CF – FC Salzburg
Referee: Felix Zwayer (GER)
Assistant Referee 1: Marco Achmüller (GER)
Assistant Referee 2: Rafael Foltyn (GER)
Fourth Official: Sören Storks (GER)
VAR: Marco Fritz (GER)
AVAR: Mark Borsch (GER)
Referee Observer: Fredy Fautrel (FRA)
Rangers FC – Royal Antwerp
Referee: Pawel Raczkowski (POL)
Assistant Referee 1: Radoslaw Siejka (POL)
Assistant Referee 2: Adam Kupsik (POL)
Fourth Official: Piotr Lasyk (POL)
VAR: Pawel Gil (POL)
AVAR: Tomasz Kwiatkowski (POL)
Referee Observer: Michael Riley (ENG)
Arsenal FC – SL Benfica
Referee: Björn Kuipers (NED)
Assistant Referee 1: Sander van Roekel (NED)
Assistant Referee 2: Erwin Zeinstra (NED)
Fourth Official: Danny Makkelie (NED)
VAR: Pol van Boekel (NED)
AVAR: Rob Dieperink (NED)
Referee Observer: Georgios Bikas (GRE)
PSV Eindhoven – Olympiacos FC
Referee: Clément Turpin (FRA)
Assistant Referee 1: Nicolas Danos (FRA)
Assistant Referee 2: Cyril Gringore (FRA)
Fourth Official: Frank Schneider (FRA)
VAR: Jerôme Brisard (FRA)
AVAR: Willy Delajod (FRA)
Referee Observer: Darko Čeferin (SVN)
Bayer Leverkusen – BSC Young Boys
Referee: Davide Massa (ITA)
Assistant Referee 1: Filippo Meli (ITA)
Assistant Referee 2: Stefano Alassio (ITA)
Fourth Official: Daniele Doveri (ITA)
VAR: Paolo Valeri (ITA)
AVAR: Michael Fabbri (ITA)
Referee Observer: Juan Fernandez Marin (ESP)
GNK Dinamo – FC Krasnodar
Referee: Halil Umut Meler (TUR)
Assistant Referee 1: Mustafa Eyisoy (TUR)
Assistant Referee 2: Cevdet Komurcuoglu (TUR)
Fourth Official: Arda Kardeşler (TUR)
VAR: Abdulkadir Bitigen (TUR)
AVAR: Ali Palabiyik (TUR)
Referee Observer: Rusmir Mrković (BIH)
AS Roma – SC Braga
Referee: Andreas Ekberg (SWE)
Assistant Referee 1: Mehmet Culum (SWE)
Assistant Referee 2: Stefan Hallberg (SWE)
Fourth Official: John Beaton (SCO)
VAR: Stuart Attwell (ENG)
AVAR: Paul Tierney (ENG)
Referee Observer: Frank De Bleeckere (BEL)
Leicester City – Slavia Praha
Referee: Serdar Gözübüyük (NED)
Assistant Referee 1: Joost Van Zuilen (NED)
Assistant Referee 2: Johan Balder (NED)
Fourth Official: Jeroen Manschot (NED)
VAR: Dennis Higler (NED)
AVAR: Bas Nijhuis (NED)
Referee Observer: Alain Hamer (LUX)
AC Milan – Crvena Zvezda
Referee: Jesus Gil Manzano (ESP)
Assistant Referee 1: Diego Barbero Sevilla (ESP)
Assistant Referee 2: Angel Nevado Rodriguez (ESP)
Fourth Official: Santiago Jaime Latre (ESP)
VAR: Alejandro Hernandez Hernandez (ESP)
AVAR: Javier Estrada Fernandez (ESP)
Referee Observer: Francesco Bianchi (SUI)
Manchester United – Real Sociedad de Futbol
Referee: Lawrence Visser (BEL)
Assistant Referee 1: Thibaud Nijssen (BEL)
Assistant Referee 2: Rien Vanyzere (BEL)
Fourth Official: Allard Lindhout (NED)
VAR: Kevin Blom (NED)
AVAR: Jochem Kamphuis (NED)
Referee Observer: Ray Ellingham (WAL)
Club Brugge – Dynamo Kyiv
Referee: Srdjan Jovanović (SRB)
Assistant Referee 1: Uroš Stojković (SRB)
Assistant Referee 2: Milan Mihajlović (SRB)
Fourth Official: Fran Jović (CRO)
VAR: Sascha Stegemann (GER)
AVAR: Luis Godinho (POR)
Referee Observer: Lutz-Michael Fröhlich (GER)