Newcastle are investigating club legend and Under-23s manager Peter Beardsley following accusations made by El-Mhanni and supported by five team-mates in written submissions. It is understood that promising youngster Lewis Gibson also left for Everton in the summer after no longer wanting to play for Beardsley.
Beardsley has denied the latest claims, which are being looked into by managing director Lee Charnley and head of safeguarding Steve Swinyard.
The interested parties should find out the result of the investigation this week, and the outcome is likely to influence talks between El-Mhanni and Newcastle as both sides remain open to renewing his contract.
However, El-Mhanni has only six months left to run on his deal, which has an option to extend for a year. He is free to talk to clubs about a move without needing Newcastle to accept a bid.
Newcastle manager Rafael Benitez will enter talks over a new contract or a transfer for El-Mhanni, who has made two appearances in his first team, but only after the investigation is concluded.
Goal understands that neither side has ruled out a renewed contract offer between El-Mhanni and Newcastle but talks won't begin until after the hearing.