The executive, David Chung, was the president of the Oceania Football Confederation, whose 14 members wield little power competitively or politically in FIFA. But Chung, of Papua New Guinea, had outsize influence as the most senior of FIFA’s eight vice presidents.
Chung cited personal reasons for his decision, but the announcement came as he found himself under mounting pressure to step down after an audit into a multimillion-dollar project to build a new headquarters for the O.F.C.