Blatter, 78, speaking via video link at Manchester’s Soccerex, says he wants coaches to be allowed at least one challenge per half.
“We can try in a youth competition, an Under-20, like next year when we are in New Zealand,” he says.
“It can only be done where there is television coverage of all the matches.”
In a wide-ranging interview, Blatter also confirmed he would seek re-election as FIFA president in 2015.
Buoyed by a successful World Cup in Brazil, Blatter believes he has the backing to win again.
“I will make an official declaration definitely in September now when we have the executive committee,” Blatter says.
“I will inform the executive committee. It’s a question of respect also to say then to the football family, ‘Yes I will be ready. I will be a candidate.'”
“A mission is never finished, and my mission is not finished,” said Blatter, who has previously stopped short of confirming his candidacy.
“I got (from) the last congress in Sao Paulo not only the impression but the support of the majority, a huge majority of national associations asking ‘Please go on, be our president also in future.'”
Ends
Video
FIFA President Soccerex interview available here