Sources claim the group was offered a lucrative Live Nation comeback tour as long as Neil lost weight and sought out treatment for substance abuse but the singer insisted he'd only comply if Lee agreed to sort out his drug use first.
Now, Neil is fighting back, insisting there is no such deal on the table and he has no problems with his former bandmate.
"People these rumors are false," he wrote on Twitter. "I haven't spoken to any band members since movie premiere ('The Dirt') (sic)."
"I had to cancel shows due to back problems which I am getting treatment now (sic). There is no tension between me and Tommy. Don't believe anything from These so-called gossip sites. Keep Rocking."
The band briefly reunited last year to record new music for their Netflix biopic and regrouped on the red carpet for the film's premiere earlier this year.