Platini's idea is to reward the FA Cup winners with a place in the Champions League, and he is hoping the chance to win a place in Europe's premier club tournament will reignite the domestic cup competitions.
However, Manchester United manager Sir Alex Ferguson is very much opposed to the proposal, as he believes that such a move would devalue the efforts of clubs fighting for places week after week in the leagues.
But Gaillard explained that after a meeting with some of the world's top coaches, neither Wenger or Mourinho had any objections.
"We had a meeting with top coaches and managers to discuss a number of issues including the changes to the Champions League format," Gaillard said.
"There were no negative statements or remarks with regard to the proposed changes. It was all very positive.