Bobby Madden has been appointed to referee the second leg of the third round UEFA Champions League qualifier Olympiacos FC v İstanbul Başakşehir FK. The match will take place in Stadio Georgios Karaiskakis, Piraeus at 7.30pm (UK time) on Tuesday, 13 August.
 
The rest of the referee team appointed are as follows:
 
Assistant Referee 1: Douglas Ross
Assistant Referee 2: David Roome
Fourth Official: Greg Aitken