a davis cup or ryder cup style thing for football?
could it be plausibl? the top 4 or 8 leagues put forward 3 teams in a knockout tournament.
so it could be england vs spain, and which ever nation has more points goes through to the next round
then they draw which 3 teams play each other home and away. because i just don’t rate the way the europa league works, they do like what 3 months of qualifying, and a team that finished 1 place above them can get basically knocked out of the champions league and end up in the europa league