*NSYNC's CHRIS KIRKPATRICK REUNION TALKS ARE 100% UNDERWAY!!!
*NSYNC's Chris Kirkpatrick is stirring the pot ... telling TMZ, talks about getting the band back together are indeed heating up.
Chris says he's definitely had lengthy discussions with JT, JC Chasez, Lance Bass, and Joey Fatone about the band's future -- and it's just a matter of getting everyone on the same page about what they wanna do next.
He confirms to us they're working on it, and it's not a categorical no to a stage comeback -- much to the delight of tour promoters and music labels eager to cash in on the guys getting back together.