Trabzonspor – Midtjylland
Referee: Matthew De Gabriele (MLT, photo)
Assistant Referee 1: Jurgen Spiteri (MLT)
Assistant Referee 2: Mitchell Scerri (MLT)
Fourth Official: Bülent Birincioglu (TUR)
Referee Observer: Sabri Calik (TUR)
MTK Budapest – Genk
Referee: Daniyar Sakhi (KAZ)
Assistant Referee 1: Sergei Kalachyov (KAZ)
Assistant Referee 2: Samat Tergeussizov (KAZ)
Fourth Official: Reka Molnar (HUN)
Referee Observer: Vencel Toth (HUN)
Hajduk Split – Minsk
Referee: Marcel Birsan (ROU)
Assistant Referee 1: Marius Badea (ROU)
Assistant Referee 2: Cosmin Vatamanu (ROU)
Fourth Official: Ante Juric (CRO)
Referee Observer: Ante Vucemilovic-Simunovic (CRO)
Crvena Zvezda – Empoli
Referee: Vassilis Fotias (GRE)
Assistant Referee 1: Chrysoula Kouroumpylia (GRE)
Assistant Referee 2: Andreas Meintanas (GRE)
Fourth Official: Dejan Trifkovic (SRB)
Referee Observer: Milan Karadzic (SRB)
Zilina – Kairat
Referee: Dragomir Draganov (BUL)
Assistant Referee 1: Georgi Todorov (BUL)
Assistant Referee 2: Petar Dzhuganski (BUL)
Fourth Official: Michal Ocenas (SVK)
Referee Observer: Vladimir Medved (SVK)
Angers – AZ Alkmaar
Referee: Morten Krogh (DEN)
Assistant Referee 1: Daniel Norgaard (DEN)
Assistant Referee 2: Jakob Mastrup (DEN)
Fourth Official: Benjamin Lepaysant (FRA)
Referee Observer: Neale Barry (ENG)
Deportivo – Maccabi Haifa
Referee: Helgi Jonasson (ISL)
Assistant Referee 1: Thordur Arnason (ISL)
Assistant Referee 2: Egill Gudlaugsson (ISL)
Fourth Official: Alexandre Lopez Vila (ESP)
Referee Observer: Robert Schorgenhofer (AUT)
Septemvri – Rangers
Referee: Nathan Verboomen (BEL)
Assistant Referee 1: Mathias Hillaert (BEL)
Assistant Referee 2: Ruben Wyns (BEL)
Fourth Official: Stanimir Trenchev (BUL)
Referee Observer: Georgi Yordanov (BUL)