Professional Footballers' Association chief executive Gordon Taylor is to stand down at the end of the season, reports BBC Sport.
The 75-year-old has been chief executive of the organisation since 1981 and a letter announcing his resignation will be sent to members on Wednesday afternoon.
In 2019, the PFA commenced a "full and open review" into its finances.
This review was completed in July and Taylor's letter is understood to also contain its key recommendations.
Taylor announced the review in November 2018 following intense criticism of the players' union.
At the time, he said the organisation's entire management committee, including himself, would stand down at the annual general meeting following the report's release, which will take place on Thursday.