The Clarets travel to the Karaiskakis Stadium to take on the Greek side in the first leg of the Europa League play-offs
Premier League side Burnley face Greece's Olympiakos in the first leg of the Europa League play-off round.
The Clarets are the away side for the opener and a win would boost their chances of qualifying for the group stages ahead of the reverse fixture at Turf Moor on Thursday August 30.
Olympiakos finished third last season in the Greek Super League after winning seven league titles in a row from 2011 to 2017 and will prove tough competition for Sean Dyche's side.