The winners of the Europa League second-round tie between Aberdeen and Burnley will play Istanbul Basaksehir, who finished third in the Turkish league, in the third qualifying round.
The third-round ties will be played on 9 and 16 August.
Istanbul Basaksehir finished three points behind winners Galatasaray and level on points with second-placed Fenerbahce in the Turkish Super Lig last season.
Their squad includes former Arsenal and Manchester City players Emmanuel Adebayor and Gael Clichy, as well as on-loan Barcelona midfielder Arda Turan.
They will play Scottish Premiership runners-up Aberdeen on 26 July and 2 August.