Uefa presidential candidate Michel Platini has said he would like to limit each country's participation in the Champions League to three clubs.
Platini has outlined part of his vision for European football
Should Platini take over from current president Lennart Johansson, England, Spain and Italy would all lose a spot.
Platini said: "Four clubs are too many - for the country itself, the fans and TV rights. Three should be the limit.
"There are not enough national champions in the last 32 of the tournament and that cannot be right."
However, Platini added that "I am not so stupid as to want to change the current format".
But the 51-year former France international does see other areas in European football where he feels radical change is necessary.
He added: "We have to fight for youth players. If a club develops a player between the age of 12 and 18 and another club then buys him, he has to carry on playing.
I am totally against refereeing by video. Where would it stop?
Players are developed to play, not to be sold."
And he would also like to introduce four linesmen in professional football to replace the present two.
"We have to help referees who can't see everything and I believe two more assistants on either side of the pitch would do this," he said.
"It would help judging offside decisions as well as a range of off-the-ball incidents."
But he said he would never embrace video evidence - apart from goal-line technology.
He added: "I am totally against refereeing by video. Where would it stop?
If you start with videos, you will finish with videos and there would be no more referees."
He also said he supported automatic relegation for clubs who are unable to pay their debts, no matter how powerful they are.
"It can't be right that some clubs in some countries get relegated for being heavily in debt while others can go on and win the Champions League," he said.