The seedings will be confirmed on Friday morning but we know Rangers will be in Pot 1 alongside the likes Manchester United, Tottenham, and Ajax.
As well as those big clubs, others like Real Sociedad, Athletic Bilbao, Galatasaray, are potential opponents.
There are plenty of familiar foes as well such as Braga, Dynamo Kyiv, and Malmo.
As for Hearts, there is a wide range of opponents. Chelsea are by far and away the strongest side on paper in the competition.
Then there are Kilmarnock’s conquerors FC Copenhagen and Fiorentina, who Hearts faced two seasons ago in this competition.
There is also the potential to play other British sides, with Larne of Northern Ireland and The New Saints of Wales the first sides from their countries to make it to the main draw of European competition.