FIFA boss Sepp Blatter’s sudden resignation this week only days after being re-elected shows that the US campaign to bust the football federation over alleged financial corruption is probably going to intensify during the weeks and months ahead. Blatter had been re-elected for the fifth time last Friday as the federation’s president. He had earlier brushed off calls for his resignation from the American and British governments, amid a storm of media allegations over corruption at the World Cup organising body. Now only four days after being re-elected, the FIFA chief executive is quitting, saying somewhat cryptically that he does not have a sufficient mandate in the world of football to continue at the helm of the organisation.