Nyon: Napoli will play Athletic Bilbao and Arsenal face Turkey`s Besiktas for a place in the Champions League group stage following the playoff round draw on Friday.
Twice former champions Porto were also handed a difficult draw as they were paired against Lille, with the French club at home in the first leg.
Scottish champions Celtic, reprieved after third qualifying round opponents Legia Warsaw fielded an ineligible player in their 6-1 aggregate win, will meet Slovenian champions Maribor.
Former European champions Steaua Bucharest were drawn with Bulgaria`s Ludogorets Razgrad.
The first legs will be played on Aug. 19/20 with the returns on Aug. 26/27.
Maribor (Slovenia) v Celtic (Scotland)
Salzburg (Austria) v Malmo (Sweden)
AaB (Denmark) v APOEL (Cyprus)
Steaua (Romania) v Ludogorets (Hungary)
Slovan Bratislava (Slovakia) v BATE (Belarus)
Besiktas (Turkey) v Arsenal (England)
Standard Liege (Belgium) v Zenit (Russia)
Copenhagen (Denmark) V Bayer Leverkusen (Germany)
Lille (France) v Porto (Portugal)
Napoli (Italy) v Athletic Bilbao (Spain)
Matches to be played Aug. 19/20 and Aug. 26/27