Pereira’s decision to play on was condemned on Twitter with FIFPro’s director of communications Andrew Orsatti slamming FIFA’s lack of regulations regarding concussion.

The danger of concussion has become a major issue in American buy harry kane england shirt online football, rugby union and Australian football over the past five years with more stringent protocols being introduced to protect players.

“That Pereira was allowed to play on without a thorough sideline concussion assessment is just appalling. Lives are at stake, FIFA. Wake up,” Orsatti tweeted.

Soon after returning to the pitch, Pereira crunched England’s Glen Johnson from behind but somehow escaped sanction from the referee.

Dr Aaron Gray, the sports medicine physician at the University of Missouri, tweeted that Pereira’s tackle was a clear symptom of concussion.

“No one in right mind makes that challenge on ball rolling Cheap football shirts out of bounds. Irritability, anger, confusion (are) all concussion symptoms,” Gray wrote.

“Pereira’s rash tackle after returning likely caused by effects of concussion and could have caused him to be sent off.”