The FIFA appointed the president of CONMEBOL as director of its finance committee.
The Paraguayan Alejandro Domínguez will be in charge of the committee of eight members, which includes two independent officials external to football, FIFA announced on Friday.
The leader of football in South America replaces another FIFA vice president, the head of the African Confederation Issa Hayatou.
Domínguez was elected president of CONMEBOL last year after his predecessor, Juan Angel Napout, was arrested in Switzerland and charged in the United States with corruption charges. Napout's two predecessors are also accused of corruption.
Domínguez was one of Gianni Infantino's main allies in his successful campaign to be elected president of FIFA last year.
FIFA froze millions of dollars in CONMEBOL funds while the US investigation continues, in which Domínguez is not involved.
The world governing body said the finance committee "will oversee the administration of finances and advise the FIFA Council on financial issues and asset management."
FIFA expects to generate more than $5 billion in the four-year commercial cycle related to the 2018 World Cup in Russia.
Hayatou, the predecessor of Domínguez in the position, had a salary of $500,000 for his "additional charges and responsibilities" as committee director, in addition to his stipend of $3,000 as a member of the FIFA Council. Domínguez rejected the $5,000 remuneration, said Carmen Meza, the director of Corporate Affairs for CONMEBOL.
"The president rejected the additional $5,000 because he already plans to receive the sum of $300,000 as a member of the Council, the same as all other members," said Meza.
The position of finance director is a crucial one in FIFA's new, streamlined structure, which seeks to modernize and implement the anti-corruption reforms approved after the criminal investigations of the United States and Switzerland became public in May 2015.
All members of the nine FIFA committees had to pass integrity assessments.
A new committee overseeing club football includes former players Cafu and Edwin van der Sar.