Blatter 'agreed to $10m donation' over 2010 World Cup
The BBC has seen evidence that the head of Fifa, Sepp Blatter, agreed to a $10m donation from South Africa.
It is contained within an email that apparently linked Fifa Secretary-General Jerome Valcke to the payment.
US prosecutors claim the money was a bribe to secure the 2010 World Cup for South Africa.
South Africa's Football Association has denied any wrongdoing.
Karen Allen reports from Johannesburg.