In combination with sporting conditions, any club should be accredited by its countrywide association to be involved in the Champions League. To acquire a license, the club have to meet up with selected stadium, infrastructure and finance prerequisites. Given that the main edition with the competition in 1971 4 groups https://landenamayn.theobloggers.com/42711176/an-unbiased-view-of-what-are-the-uefa-champions-league-and-uefa-europa-league