Reports by BBC says football’s governing body Fifa is due to open its annual congress despite warnings from sponsors that they may review ties over the arrest of seven top officials on corruption charges.
Visa says it will reassess its sponsorship unless Fifa makes changes. Coca-Cola and Adidas voiced concern.
The European football body Uefa will decide whether to boycott Friday’s Vote for the next Fifa president.
Incumbent Sepp Blatter has yet to appear in public since the arrests.
Mr Blatter, who is hoping to secure a fifth term at Fifa’s congress in the Swiss city of Zurich on Thursday, was not named in the corruption investigations.
Fifa provisionally banned from football-related activity 11 of the 14 people charged by the US authorities on Wednesday.
They are accused of racketeering, fraud and money laundering, including charges of receiving bribes to influence the outcome of bids to stage football tournaments, such as the 2010 World Cup in South Africa and the 2016 Copa America in the US. South African government officials have denied the claim.
