Celtic and Ajax are massive clubs in Europe.
The former Manchester United goalkeeper has revealed that he has been speaking to Celtic chief executive Peter Lawwell for a while regarding the way forward.
Both Ajax and Celtic want to close the gap on the richest clubs in Europe and want it to be a level playing time.
Van der Sar told The Scottish Sun: “I have been talking to Peter Lawwell for some time.
“The ECA is talking to Uefa, trying to make sure there’s more participation and possibilities for clubs from medium and smaller countries, so we can develop and play football at this level.
“Many of us are looking at a different way of how teams are set up and how the competition is set up.”
The former Netherlands international goalkeeper added: “Celtic and Ajax are great names in history. They have great followings, all over the world, not just in Holland and Scotland.
“They are historic clubs and they have both won the European Cup. That is why it is difficult for us not to be involved. We see the Champions League running away from us a little bit.”
Celtic are one of the biggest clubs in the world and have a global following, but their participation in the Champions League is no guaranteed even if they win the Scottish Premiership.
The Glasgow giants have to go through qualifying rounds, and then they end up in a tough group competition against clubs with a bigger budget and much better players.
The main problem with Celtic is that the Scottish Premiership is not a very rich league, and the money they can get from the domestic arena is quite limited.
As for Ajax, the Dutch giants have also struggled to compete with the big boys in recent years, but they have reached the quarter-finals of the Champions League this season.