IFAB approves permanent use of five substitutes.

DOHA -- Football's rules body on Monday said five substitutes would be permanently introduced for all top-level matches and a semi-automated offside detector is closer to being used at this year's World Cup.

FIFA president Gianni Infantino said the change to more substitutes, which was first allowed in 2020 because of the coronavirus pandemic, followed "strong support from the entire football community".

He said after the annual meeting of the International Football Association Board (IFAB) that experts would decide on whether offside detection technology would be used for the World Cup that starts November 21.

FIFA's Referees Committee chairman Pierluigi Collina said he was "confident" the system would be introduced in time for the 32-nation tournament.

Tests were carried out at the FIFA Arab Cup last year and Club World Cup this year.

The system monitors data points on the limbs of players to create a model that is reviewed pitchside by the referee.

"We are very satisfied so far and our experts are looking into it before deciding whether it will be introduced for the World Cup," Infantino told a press conference.

It is officially known as "semi-automated" as it will be the referee that makes a final decision on an offside.

FIFA is also looking into introducing a VAR system with fewer cameras to a wider number of competitions. It is currently only used at international tournaments and in some domestic competitions.

Tests on the less-tech heavy, cheaper system have already been held at 100 matches in Europe and will now be extended.

As well as making the five substitutions permanent, IFAB said that teams can now name 15 substitutes on a team sheet instead of 12.

IFAB said that trials of referees wearing body cameras may be...