Manchester United, Man City Tottenham and Liverpool all have to play in tough groups in this years Champions League.
United play in group H which sees Ronaldo coming back to Old Trafford with his new club Juventus, Valencia and Young Boys are the other teams in the group.
City play in group F which is seen as the easiest group they play against Shakhtar Donetsk, Lyon, and Hoffenheim.
Spurs play against Barcelona, PSV, and internazionale in group B.
Liverpool have been drawn in group C and they will play Paris Saint Germain, Napoli and Crvena Zvezda.
The first games in the group stages will be played on the 18/19th September.