The UEFA Champions League is the most prestigious title in club football, and has been running since 1955, although it has had many changes to the tournament over time.
The 2017/18 final was held at the NSC Olimpiyskiy Stadium Cardiff, Kiev on 26th May.
Real Madrid continued to retain the title by beating Liverpool, 3-1.
We look at the preparations of the 26 sides already in the UEFA Champions League group stage.
Keep abreast of all the UEFA Champions League group stage teams' summer transfer activity.
Ajax and Dynamo Kyiv have both enjoyed considerable European success in the past, but only one can reach the 2018/19 group stage.
Benfica have won both previous home games against PAOK; a third would be a step towards a ninth successive group appearance.
Both BATE and PSV have been group stage regulars in recent years, so something has to give in their play-off tie.
Young Boys have never reached the group stage, so will be out to capitalise on home advantage first up against Dinamo Zagreb.
Crvena zvezda have never reached the group stage, while Salzburg's only previous appearance came 24 years ago.
Vidi aim to become the third Hungarian side to reach the group stage but must overcome AEK Athens, who last qualified in 2006/07.
Atlético Madrid have joined Liverpool in fourth spot on the UEFA Super Cup honours board.
Diego Costa scored the fastest-ever UEFA Super Cup goal to help Atlético win in 2018: all the records.
Won most by: Real Madrid (10 times)
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