Liverpool will visit Russia after being drawn in the same group as Rubin Kazan while Tottenham must go to Azerbaijan to face Qarabag in the Europa League.
Brendan Rodgers’s Reds also face Bordeaux from France and FC Sion of Switzerland.
As well as Qarabag, Tottenham also meet Belgians Anderlecht and Monaco from the French league.
Celtic, knocked out of the Champions League play-off, meet Ajax, Fenerbahce and Norway’s Molde in their group.
Each team will play six fixtures in the group stage, with the first match day taking place on 17 September.
Group A: Ajax, Celtic , Fenerbahce, Molde
Group B: Rubin Kazan, Liverpool, Bordeaux, FC Sion
Group C: Borussia Dortmund, Paok Thessaloniki, Krasnodar, Gabala
Group D; Napoli, Club Brugge, Legia Warsaw, Midtjyllland
Group E: Villarreal, Viktoria Plzen, Rapid Vienna, Dinamo Minsk
Group F: Marseille, Braga, Slovan Liberec, Groningen
Group G: Dnipropetrovsk, Lazio, St-Etienne, Rosenborg
Group H: Sporting Lisbon, Besiktas, Lokomotiv Moscow, Skenderbeu
Group I: Basel, Fiorentina, Lech Poznan, Belenenses
Group J: Tottenham, Anderlecht, Monaco, Qarabag
Group K: Schalke, Apoel Nicosia, Sparta Prague, Asteras Tripolis
Group L: Athletic Bilbao, AZ Alkmaar, Augsburg, Partizan Belgrade
Source: bbc sport
