If Celtic beat CFR Cluj they will be playing Czech Republic’s Slavia Prague for a place in the Champions League.
If Cluj beat Celtic, Celtic will drop down into the Europa League play-off places, where they will face the winner of Moldova’s Sheriff Tiraspol or Swedish side AIK
Rangers will face Poland's Legia Warsaw or Atromitos of Greece in the Europa League play-off round if they defeat Denmark's Midtjylland.
Aberdeen's opposition if they overcome Croatia's Rijeka will come from Gent of Belgium or Larnaca of Cyprus.