The Super League website reads: "The Super League is a new European competition between 20 top clubs comprised of 15 founders and five annual qualifiers. There will be two groups of 10 clubs each, playing home and away fixtures within the group each year.
"Following the group stage, eight clubs will qualify for a knockout tournament, playing home and away until the single-match Super League championship, in a dramatic four-week end to the season.
"Games will be played midweek, and all clubs will remain in their domestic leagues."
https://www.skysports.com/football/news/12040/12279788/european-super-league-the-key-questions-what-is-it-who-is-involved-how-likely?