London (CNN)The ugly sound of monkey chants and the sinister sight of football fans performing Nazi salutes have been beamed around the world. Now all eyes turn to UEFA, European football’s governing body. UK Prime Minister Boris Johnson called the racist abuse England’s black players suffered before and during the Euro 2020 qualifying match against Bulgaria in Sofia on Monday as “vile” and has told UEFA to act swiftly, to “face up to facts.” After a night English Football Association’s chairman Greg Clarke described as “one of the most appalling I’ve seen in football,” the pressing question now is: What punishment will Bulgaria face for some of its fans’ abhorrent behavior? Euro 2020 qualifier between Bulgaria and England paused twice over racist abuse The fallout has already begun. Bulgaria’s Prime Minister called for the president of the country’s football association to resign immediately. Borislav Mihaylov has since announced he will step down. But if football wants to eradicate the racism which is bringing shame on the sport, what UEFA does next will have the biggest impact on effecting change. Read More UEFA’s disciplinary proceedings have begun, with the Bulgarian Football Union charged with racist behavior, including chants and Nazi salutes,…