FIFA President Sepp Blatter has proposed that football team managers should be allowed to challenge referee's decisions. Blatter told FIFA's Congress on Wednesday that managers could be given two challenges per match. The proposal was unexpected given Blatter's traditional support for referees and opposition to using technology. When Blatter changed his mind on goal-line technology at the 2010 World Cup, he said it was the only issue he would open. Instead, Blatter says now "I think it's good to put the game and the control of the game in question." Any change must be approved by the rules panel IFAB. The proposal is likely to be opposed Michel Platini, the president of UEFA which has openly opposed Blatter's re-election plans this week.