A former friend of ex X Factor judge Tulisa is said to be among the Big Brother 2013 housemates.
Big Brother launches tomorrow night and the housemate is said to have been pals with Tulisa and her N-Dubz bandmates as they grew up in London.
But now he's moved on from music production to become a sportsman.
Never the less, sources claim Tulisa's worried over what he may blab about on the show.
"Tulisa should be very worried. This guy has known her, Dappy and Fazer for years and used to write music with them when they were all in their teens," an insider claimed. “He is very well-placed to know a lot about some of the darker side of Tulisa’s character. This could be massive for her.
“I guarantee you Dappy will be watching Big Brother to see this guy as they were so close they even had nicknames for each other.”
Tulisa's year has had the best of starts so far, after being ditched from The X Factor and then arrested after being implicated in a drugs scandal.
"Things probably couldn’t get worse for Tulisa, unless this guy spills the beans," the source added to the Daily Star newspaper today. “He is a real way in to understanding what the N-Dubz guys were like when they were younger, and some of it ain’t pretty.”
Big Brother 2013 starts tomorrow night at 9PM on Channel 5.