Fenerbahce – Nottingham Forest
Referee: Sandro Schärer SUI (photo)
Assistant Referee 1: Stéphane De Almeida SUI
Assistant Referee 2: Jonas Erni SUI
Fourth Official: Anojen Kanagasingam SUI
VAR: Lukas Fähndrich SUI
AVAR: Luca Cibelli SUI
Referee Observer: René Temmink NED
GNK Dinamo – KRC Genk
Referee: Halil Meler TUR
Assistant Referee 1: Abdullah Özkara TUR
Assistant Referee 2: Ibrahim Uyarcan TUR
Fourth Official: Cihan Aydin TUR
VAR: Fedayi San SUI
AVAR: Onur Özütoprak TUR
Referee Observer: William Collum SCO
PAOK FC – Celta de Vigo
Referee: Ivan Kružliak SVK
Assistant Referee 1: Branislav Hancko SVK
Assistant Referee 2: Jan Pozor SVK
Fourth Official: Michal Očenáš SVK
VAR: Pawel Malec POL
AVAR: Piotr Lasyk POL
Referee Observer: Michael Johansen DEN
SK Brann – Bologna FC
Referee: Rade Obrenovič SVN
Assistant Referee 1: Jure Praprotnik SVN
Assistant Referee 2: Tomaž Klančnik SVN
Fourth Official: Martin Matoša SVN
VAR: Alen Borošak SVN
AVAR: Asmir Sagrković SVN
Referee Observer: Neale Barry ENG
PFK Ludogorets – Ferencvarosi TC
Referee: Tobias Stieler GER
Assistant Referee 1: Lasse Koslowski GER
Assistant Referee 2: Mark Borsch GER
Fourth Official: Matthias Jöllenbeck GER
VAR: Sören Storks GER
AVAR: Johann Pfeifer GER
Referee Observer: Boško Jovanetić SRB
Panathinaikos FC – Viktoria Plzen
Referee: Nicholas Walsh SCO
Assistant Referee 1: Francis Connor SCO
Assistant Referee 2: Daniel McFarlane SCO
Fourth Official: Donald Robertson SCO
VAR: Andrew Dallas SCO
AVAR: Kevin Clancy SCO
Referee Observer: Aleksei Kulbakov BLR
LOSC Lille – Crvena Zvezda
Referee: Sven Jablonski GER
Assistant Referee 1: Eduard Beitinger GER
Assistant Referee 2: Robert Kempter GER
Fourth Official: Sascha Stegemann GER
VAR: Robert Schröder GER
AVAR: Christian Dingert GER
Referee Observer: Augustus Constantin ROU
Celtic FC – VfB Stuttgart
Referee: Erik Lambrechts BEL
Assistant Referee 1: Mathias Hillaert BEL
Assistant Referee 2: Kevin Monteny BEL
Fourth Official: Jasper Vergoote BEL
VAR: Bram Van Driessche BEL
AVAR: Pol van Boekel NED
Referee Observer: David Malcom NIR
