First gear: Real Madrid (defending champion), Manchester City (Premier League champion), Bayern Munich (Bundesliga champion), Milan (Serie A champion), Paris Saint-Germain (French champion), Porto (Portuguese super champion), Ajax (Dutch champion) and Frankfurt (Europa League champion).
Second gear: Liverpool, Chelsea, Barcelona, Juventus, Atletico Madrid, Seville, Tottenham and RB Leipzig.
Third gear: Dortmund, Red Bull Salzburg, Miner Donetsk, Inter Milan, Naples, Benfica, Portuguese Sports, Leverkusen.
The fourth gear: Marseille, Bruges, Celtic, Bilsen Victory, Haifa Maccabi, Dynamo Zagreb, Wanderers, Copenhagen.