Sepp Blatter's anti-corruption drive has hit another delay, with FIFA saying it cannot name independent outsiders to spearhead a new investigations unit until July.
FIFA critics want these officials to probe past allegations of wrongdoing in their new jobs leading prosecution and judging chambers of a revamped ethics court.
FIFA says one candidate to chair the judging division has declined for health reasons.
FIFA's executive committee has proposed Swiss industrialist Domenico Scala to chair a new audit committee, and Lydia Nsekera of Burundi as its first female delegate.
FIFA's 208-member countries must finalize the appointments on Friday.
Blatter's previous promise to identify officials who took million-dollar World Cup kickbacks has stalled since October.