German referee Deniz Aytekin will be in charge of Atletico vs Qarabag in Group C of the Champions League, while Anthony Taylor takes charge of Olympiakos vs Barcelona in Group D.
Aytekin was in charge of Barcelona's 6-1 win over PSG last year. Taylor is a well-known Premier League referee, who has been a protagonist in various encounters with Mourinho and Guardiola.
