Real Sociedad – Manchester United
Referee: Ivan Kružliak SVK (photo)
Assistant Referee 1: Branislav Hancko SVK
Assistant Referee 2: Jan Pozor SVK
Fourth Official: Peter Kralović SVK
VAR: Pol van Boekel NED
AVAR: Michal Očenáš SVK
Referee Observer: Nicola Rizzoli ITA
AZ Alkmaar – Tottenham Hotspurs
Referee: Rade Obrenovič SVN
Assistant Referee 1: Jure Praprotnik SVN
Assistant Referee 2: Andraž Kovačič SVN
Fourth Official: David Šmajc SVN
VAR: Alen Borošak SVN
AVAR: Carlos Del Cerro Grande ESP
Referee Observer: Juan Fernández Marín ESP
FCSB – Olympique Lyonnais
Referee: Tobias Stieler GER
Assistant Referee 1: Christian Gittelmann GER
Assistant Referee 2: Mark Borsch GER
Fourth Official: Harm Osmers GER
VAR: Sören Storks GER
AVAR: Robert Schröder GER
Referee Observer: Haim Jakov ISR
Fenerbahce SK – Rangers FC
Referee: Alejandro Hernández Hernández ESP
Assistant Referee 1: José Naranjo Perez ESP
Assistant Referee 2: Guadalupe Porras Ayuso ESP
Fourth Official: José Munuera Montero ESP
VAR: César Soto Grado ESP
AVAR: Valentín Pizarro Gómez ESP
Referee Observer: Stefano Podeschi SMR
Viktoria Plzen – Lazio
Referee: Donatas Rumšas LTU
Assistant Referee 1: Aleksandr Radiuš LTU
Assistant Referee 2: Dovydas Sužiedėlis LTU
Fourth Official: Manfredas Lukjančukas LTU
VAR: Benjamin Brand GER
AVAR: Donatas Šimenas LTU
Referee Observer: Howard Webb ENG
Bodo Glimt – Olympiakos
Referee: Mykola Balakin UKR
Assistant Referee 1: Oleksandr Berkut UKR
Assistant Referee 2: Dmytro Zaporozhenko UKR
Fourth Official: Vitaliy Romanov UKR
VAR: Marco Di Bello ITA
AVAR: Viktor Kopiievskyi UKR
Referee Observer: Tomasz Mikulski POL
AFC Ajax – Eintracht Frankfurt
Referee: Simone Sozza ITA
Assistant Referee 1: Giovanni Baccini ITA
Assistant Referee 2: Davide Imperiale ITA
Fourth Official: Andrea Colombo ITA
VAR: Daniele Chiffi ITA
AVAR: Aleandro Di Paolo ITA
Referee Observer: David Fernández Borbalán ESP
AS Roma – Athletic Club
Referee: Sandro Schärer SUI
Assistant Referee 1: Stéphane De Almeida SUI
Assistant Referee 2: Jonas Erni SUI
Fourth Official: Lionel Tschudi SUI
VAR: Fedayi San SUI
AVAR: Bastian Dankert GER
Referee Observer: Martin Ingvarsson SWE
