The decision to permanently amend football's laws came at a virtual FIFA-chaired IFAB meeting following requests from different confederations, associations and leagues.
IFAB said the rule, first introduced last year in response to the COVID-19 pandemic, will remain in place until 31 December, 2022, "for all top-level competitions".
Trials of permanent concussion substitutes in English football 'fall short' of objective, say FIFPRO, PFA
In a joint letter sent to the International Football Association Board (IFAB), which determines the laws of the game, FIFPRO and the PFA said existing trials using permanent concussion substitutes should be extended to test parallel temporary concussion replacements "as soon as possible".
Clarence Seedorf urges yellow cards for players covering mouths to talk to rivals as way to curb racial abuse
Football bodies UEFA and FIFA have closed previous disciplinary cases when players say they have been racially abuse by an opponent by citing lack of evidence to support their claims.
Premier League to trial concussion substitutes from February as concerns rise over head injuries in football
Premier League and FA chiefs have agreed that teams will be able to make two permanent concussion substitutes even if they have made all their permitted changes.
Southgate, who had a long playing career, has volunteered to be part of the HEADING study at the London School of Hygiene and Tropical Medicine, which is backed by the Football Association.
The International Football Association Board (IFAB), the guardian of the laws of the game, approved such experiments in December.
FIFA said in a statement that it will "trial additional permanent substitutions for cases of actual or suspected concussion" at the competition in Qatar on 1-11 February.
Teams will be allowed a permanent substitution in concussion cases, with the player involved not allowed to return later in the game.
Vertonghen briefly tried to play on after an aerial collision involving teammate Toby Alderweireld and Ajax goalkeeper Andre Onana, but he soon had to be helped from the field and was seen vomiting on the pitch.
Premier League: Wolves' Raul Jimenez 'conscious, responding to treatment' after clash of heads with David Luiz
Jimenez received treatment from medics for 10 minutes on the pitch after colliding with David Luiz before being stretchered from the field early on in the game.
FIFA reviewing potential of more affordable Video Referee Assistance system for 'all levels of football'
The "Innovation and Excellence" working group of the world football body will present a "recommendation" for the implementation of this reform -- dubbed the "VAR 'light' concept" — to FIFA and IFAB, the International Football Association Board which is the guarantor of the laws of the game.
IFAB's technical and football advisory panels meet this month ahead of the 134th IFAB annual general meeting early next year
UEFA chief Ceferin's intervention came after a spate of penalties being awarded because balls have — even unwittingly — hit outstretched or raised arms.
Five-substitute rule to be in place in next season as well, say football lawmakers citing ‘impact on player welfare’
The five-substitute rule was introduced during the post-lockdown restart of football leagues in order to prevent player injury due to a condensed calendar.
FIFA take on direct responsibility of VAR regulation, hoping to implement it uniformly across all competitions
There have been some variations in the use of VAR in different competitions and national leagues, but Collina said there should be a uniform approach.
Italian Football Federation approves five substitutions rule for Serie A when league resumes on 20 June
The FIGC said in a statement that its decision-making council had agreed “to allow a maximum number of five substitutions to be made for each team in the scheduled competitions up to the end of the 2019/2020 season.”
Bundesliga: Teams allowed up to five substitutions per match, relegation and promotion to proceed as usual, says DFL
The Bundesliga will be the first major European league to resume when it gets going following a two-month break due to the COVID-19 pandemic
Football’s law-making body IFAB to conduct year-long review of offside law after controversial VAR calls
When football’s law-making body IFAB met last week, a decision that could massively impact the game at all levels passed barely noticed as the debate over VAR technology hogged the limelight.
Premier League expected to use pitchside monitors next season for VAR decisions, says IFAB technical director David Elleray
The Premier League is expected to switch next season to regular use of the pitchside monitor for VAR decisions, world football’s referee supremo David Elleray said