Arsene Wenger believes the UEFA Champions League would be weakened by the inclusion of cup winners and more teams from lower-ranked nations.
This season's group stage has already seen Arsenal beat Slavia Prague 7-0
and Liverpool thrash Turkish champions Besiktas 8-0.
However, only 15 of UEFA's 53 member nations are still represented in the Champions League and Michel Platini wants to make the competition more accessible across Europe.
Wenger fears Platini's proposals would undermine the Champions League further and he also harbours concerns about the status of the Uefa Cup, after watching Bayern Munich withdraw Franck Ribery after just an hour of Thursday's 2-2 draw with Bolton.
He said: "You have to be careful not to change the Champions League too much by bringing in even more weaker teams, because you could find yourself with games five and six with no meaning.
"That would be very dangerous for the quality of the competition.
"The Uefa Cup has a different problem. The mistake there is that, with groups
of five, the best three teams qualify (for the knockout phase).
'"That means with four points you can go through. That is not serious.
'"Last night in the Uefa Cup Bayern Munich took Ribery off after 60 minutes,
Bastian Schweinsteiger after 70 minutes to prepare for the game on Saturday. That means it becomes a friendly game."
