Delaney was called before a parliamentary committee over the personal loan, provided two years ago to help the FAI with what it called a short-term cash flow issue. Delaney said it was the only time he gave such a loan and it was repaid in full.
Delaney will remain in the association he has led since 2005 in a new role of executive vice-president.
Rea Walshe, who was promoted to the role of chief operation officer a month ago, was named interim chief executive. The move was announced after Ireland beat Gibraltar 1-0 in their opening Euro 2020 qualifier.
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(Reporting by Padraic Halpin, editing by Ed Osmond)
