The incident occurred in March but FFA sources have claimed Nikou only told the rest of the board once the investigation had commenced,causing frustration and angst among some of the other directors.
After two new directors are elected at Thursday's AGM to replace Murray and Rosmarin,whose resignations have not been publicly acknowledged by FFA,the board will vote to decide whether Nikou will retain his position as chairman as stipulated by the governing body's constitution.
Melbourne City pair Lachlan Wales and Nathaniel Atkinson,along with Perth Glory's Brandon Wilson,were on Tuesday banned from international duty until August 10 - meaning they will not be part of next year's Olympics should Australia qualify.
Adelaide United star Riley McGree,the Olyroos captain,recieved a more lenient suspension which expires on April 1 and would allow him to play at Tokyo 2020.
FFA punished the quartet for breaching their code of conducthaving allegedly engaged in consensual sex with a Cambodian woman at the team's hotel in the capital on the final night of their preliminary Olympic qualifying tournament,breaking a team curfew in the process.
McGree received a lighter sentence,FFA sources said,because he had left the hotel room earlier than the other three players,who are alleged to have subsequently kicked the woman out and left her stranded without arranging transport for her to return home.
The woman complained about her treatment by the players to the Australian embassy a week later,and was also concerned there were photos or videos taken of the encounter. FFA sources suggest the governing body was made aware of the claims once the team arrived back in Australia.