Sepp Blatter: 'Football TV referrals trial may happen next year'
A TV replay system allowing coaches to challenge a referee's decision may be trialled next year, Fifa president Sepp Blatter has announced.
Speaking via video link at Manchester's Soccerex, the Swiss, 78, said he wanted coaches to be allowed at least one challenge per half.
He revealed the trial could happen at next year's Fifa Under-20 World Cup.
"We can try in a youth competition, an Under-20, like next year when we are in New Zealand," he said.
"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.
Coaches in the NFL have the authority to challenge a referee's decision
Coaches in the NFL have the authority to challenge an official's decision
He said the on-field referee would have the final say on whether to change their own decision.
Blatter said coaches would "have the right in the half, twice or once, to challenge a refereeing decision but only when the game is stopped".
He added: "Then, there must be a television monitor but by the television company and not by another referee.
"And then the referee and the coach, they will go then to look, and then the referee may change his mind, as it is the case in tennis, for instance."
Blatter also stated:
The 2022 World Cup in Qatar will have to be played in winter and consultation has started with the players' union FIFPro, clubs, leagues and the six continental federations about moving the tournament.
A boycott of the 2018 World Cup in Russia would not work as such a move in sport "never has any benefit".
He wants "respect, fair play and perhaps also the truth" over allegations over corruption within Fifa.
He still respects Greg Dyke despite criticism from the Football Association chairman.
Blatter announced his intention to seek a fifth term in charge of world football's governing body and will make an official announcement at Fifa's executive committee meeting between 25-26 September.
He had told delegates at a Uefa congress in March 2011 that he would definitely stand down in 2015.
However, that plan has now been shelved, with Blatter completing a U-turn.
"You see a mission is never finished. And my mission is not finished," said Blatter.
