In a statement following a meeting of the International Football Association Board (IFAB) in Vancouver, FIFA confirmed that the rule was one of two law changes that would be introduced at this year's World Cup.

"At the discretion of the competition organiser, any player covering their mouth in a confrontational situation with an opponent may be sanctioned with a red card," FIFA said in a statement.

The new rule follows controversy earlier this year when Benfica winger Gianluca Prestianni was accused of racially abusing Real Madrid star Vinicius Junior during a Champions League game in February.

In a separate law change to be enforced at the World Cup, FIFA said that red cards would also be introduced for players leaving the field of play in protest at a referee's decision.

"At the discretion of the competition organiser, the referee may sanction with a red card any player who leaves the field of play in protest at a referee's decision," FIFA said.

"This new rule will also apply to any team official who incites players to leave the field of play."

FIFA said a team causing a game to be abandoned will forfeit the match.

The move follows the uproar at this year's final of the Africa Cup of Nations, when Senegal's players, head coach Pape Thiaw and his staff walked off the pitch in Rabat after Morocco were awarded a penalty in added time, which forward Brahim Diaz ultimately missed.

Senegal went on to win the final 1-0 in extra time, but were sensationally stripped of the title by the Confederation of African Football (CAF) in a bombshell decision issued last month.

The law changes came as FIFA delegates gathered in Vancouver ahead of Thursday's FIFA Congress, the final gathering of football's global governing body before the World Cup gets underway in Canada, Mexico and the United States in June.

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