Leonard Rowe, a former business associate who has appeared as recently as Monday on Larry King Live claiming strong ties to the singer, was fired by Michael Jackson in May.
RadarOnline.com has exclusively obtained a letter written by Jackson, removing Lowe from all business dealings surrounding his scheduled 02 Arena engagement in London.
"I have decided to streamline my business operations at this time," Jackson wrote.
"Accordingly, this is to inform you that you do not represent me and I do not wish to have any oral or written communications with you regarding the handling of my business and/or personal matters."
Rowe has been making rounds on talk shows, making various accusations about concert promoter AEG.
Rowe spent time in federal prison in the early 90's for being convicted of wire fraud for his role in the cashing of a fraudulent insurance check. He has had multiple arrests for writing bad checks.