Qarabag – Olympique de Marseille
Referee: Bartosz Frankowski (POL, photo)
Assistant Referee 1: Marcin Boniek (POL)
Assistant Referee 2: Jakub Winkler (POL)
Fourth Official: Krzysztof Jakubik (POL)
Referee Observer: Costas Kapitanis (CYP)
Maccabi Tel Aviv – PSV Eindhoven
Referee: Harald Lechner (AUT)
Assistant Referee 1: Andreas Heidenreich (AUT)
Assistant Referee 2: Maximilian Kolbitsch (AUT)
Fourth Official: Markus Hameter (AUT)
Referee Observer: Darko Čeferin (SVN)
Randers FC – Leicester City
Referee: Irfan Peljto (BIH)
Assistant Referee 1: Davor Beljo (BIH)
Assistant Referee 2: Senad Ibrisimbegović (BIH)
Fourth Official: Luka Bilbija (BIH)
Referee Observer: Karen Nalbandyan (ARM)
Bodo Glimt – Celtic FC
Referee: Sergei Ivanov (RUS)
Assistant Referee 1: Roman Usachev (RUS)
Assistant Referee 2: Dmitry Safyan (RUS)
Fourth Official: Vladimir Moskalev (RUS)
Referee Observer: Uno Tutk (EST)
FK Partizan – Sparta Praha
Referee: Georgi Kabakov (BUL)
Assistant Referee 1: Martin Margaritov (BUL)
Assistant Referee 2: Diyan Valkov (BUL)
Fourth Official: Radoslav Gidzhenov (BUL)
Referee Observer: Juan Fernandez Marin (ESP)
Slavia Praha – Fenerbahce SK
Referee: Christopher Kavanagh (ENG)
Assistant Referee 1: Constantine Hatzidakis (ENG)
Assistant Referee 2: Harry Lennard (ENG)
Fourth Official: Andrew Madley (ENG)
Referee Observer: Matteo Trefoloni (ITA)
PAOK – Midtjylland
Referee: Lawrence Visser (BEL)
Assistant Referee 1: Rien Vanyzere (BEL)
Assistant Referee 2: Thibaud Nijssen (BEL)
Fourth Official: Bram Van Driessche (BEL)
Referee Observer: Herbert Fandel (GER)
Vitesse – Rapid Wien
Referee: Jakob Kehlet (DEN)
Assistant Referee 1: Lars Hummelgaard (DEN)
Assistant Referee 2: Victor Skytte (DEN)
Fourth Official: Morten Krogh (DEN)
Referee Observer: Neale Barry (ENG)
Assistant Referee 1: Lars Hummelgaard (DEN)
Assistant Referee 2: Victor Skytte (DEN)
Fourth Official: Morten Krogh (DEN)
Referee Observer: Neale Barry (ENG)