The winners of the Europa League second-round tie between Aberdeen and Burnley will play Turkey’s Istanbul Basaksehir in the third qualifying round.
Rangers will play Georgia’s Chikhura Sachkhere or Slovenians Maribor if they win against Osijek of Croatia.
Hibernian will face Norway’s Molde or Albanians Laci if they beat Asteras Tripolis of Greece in the second round.
The third round ties will be played on 9 and 16 August.
Istanbul Basaksehir were third in the Turkish top flight last season, finishing three points behind winners Galatasaray and level on points with second-placed Fenerbahce.
More to follow.