
Russell Simmons is firing back at his ex-business partner's legal threats ... telling TMZ he did NOT siphon off millions of dollars from his sneaker company -- and any accusations otherwise are the workings of a "disgruntled" employee.
TMZ broke the story ... former Run Athletics President Rasheed Young threatened to sue Russell and Reverend Run ... claiming the hip-hop moguls screwed him out of millions, by secretly funneling revenue from their company into a separate account.
Russell was out in L.A. Monday and tells TMZ ... any accusations of hiding profits are 100% "not true".
He continues, "[Rasheed] worked for me ... I fought to keep his job ... and I'm sorry he's disgruntled, but that's what happens. Anyone can say anything if a celebrity's name's attached to it ... there's nothing I can do about it ... it's false."
Russell adds, "We never stole any money from anybody."
See also

'Real Housewives of Miami' Star Alexia Echevarria Sues for $2 Million Over Son's Horrific Car Crash

Mark Salling Sued -- Woman Claims 'Glee' Star Forced Sex Without Condom

Justin Bieber -- Victorious in $9 Million Deafening Scream Lawsuit
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