Football's world governing body Fifa has announced it has opened disciplinary proceedings against Tottenham midfielder Dele Alli for the gesture he made during England's match against Slovakia.
Alli was seen raising his middle finger in the direction of referee Clement Turpin towards the end of England's 2-1 win at Wembley.
Afterwards Alli insisted the gesture was not aimed at the referee but at England defender Kyle Walker, a close personal friend and former teammate at Spurs. But Fifa has revealed that its disciplinary committee wishes to investigate the matter.
England's manager, Gareth Southgate, has also defended his young star, backing up Alli's version of what took place.
"Kyle and Dele were mucking about, and Dele's made a gesture towards Kyle," Southgate told reporters in the aftermath of his team's victory.
"The pair of them have a strange way of communicating, but that's what they've said."
Alli, who joined Spurs from MK Dons in January 2015, has become one of football's most coveted young players thanks to his performances for the London club.
The Milton Keynes-born player has helped Spurs achieve two consecutive Champions League qualifications and is regularly linked with moves to the game's biggest clubs, notably Real Madrid.