Should Hearts lose to Benfica, they will face either Atalanta (Italy), Freiburg (Germany), or the winners of ties between Panathinakos (Greece) and CSKA (Bulgaria), Paide Linnameeskond (Estonia) and Rapid Vienna (Austria), or Sheriff Tiraspol (Moldova) and St Gallen (Switzerland) in a Conference League play-off.
Motherwell have the same possible opponents should they defeat HJK Helsinki of Finland.
If Rangers lose to Jagiellonia, they will face the winners of ties between Jablonec (Czech Republic)-RFS (Latvia), Zalgiris (Lithuania)-Hajduk Split (Croatia), Brann (Norway)-Apollon Limassol (Cyprus), Inter Turki (Finland)-Vadez (Liechtenstein) or Noah (Armenia)-Sion (Switzerland).
Hibs’ reward should they defeat Shkendija of Macedonia is a possible tie against Brighton & Hove Albion, Monaco of France, the winner of the tie between Bohemian (Republic of Ireland) and Midtjylland (Denmark), the winners of IFK Gothenburg (Sweden) and Gent (Belgium), or the losers of Pafos (Cyprus) against Salzburg (Austria).
Meanwhile, Celtic could draw Austrian champions LASK, Norwegian counterparts Viking Stavanger, or the winners of ties between Celje (Slovenia) and Ararat-Armenia, Kairat Almaty (Kazakhstan) and Levski Sofia (Bulgaria) and AGF Aarhus (Denmark) and Sabah (Azerbaijan).