Have a question? All referees for Villa vs. Brugge are from Germany

Lille vs Dortmund

Referee: Scherer (Switzerland)

Assistant referees: De Almeida (Switzerland), Elney (Switzerland)

VAR referee: Siegler (Netherlands)

VAR assistant referee: Van Bukele (Netherlands)

Fourth official: Chudi (Switzerland)

Arsenal vs PSV

Referee: Rad Obrenovic (Slovenia)

Assistant referees: Jure Praputnik (Slovenia), Grega Kordji (Slovenia)

Fourth official: David Smajic (Slovenia)

VAR: Alen Boroschak (Slovenia)

AVAR: Thiago Martins (Portugal)

Aston Villa vs Brugge

Referee: Siebert (Germany)

Assistant referees: Fortin (Germany), Koslowski (Germany)

VAR referee: Dingert (Germany)

VAR referee assistant: Brand (Germany)

Fourth official: Schlager (Germany)

Atletico Madrid vs Real Madrid

Referee: Szymon Maziniak (Poland)

Assistant referees: Tomasz Lisztkiewicz (Poland), Adam Kupcik (Poland)

Fourth official: Pawel Ronczykowski (Poland)

VAR referee: Tomasz Kwiatkowski (Poland)

VAR assistant referee: Bastian Dankert (Germany)