TMZ Hip Hop caught up with the DJ, Lucasdirty ... who wants to resolve the whole thing mano a mano in a real boxing ring.

Lucasdirty's looking to finish what started last weekend ... he tells us he was alerted by the club's management that 6ix9ine was indeed in the building, so he was asked to spin his tunes.

He refused, though, because he says 6ix9ine's music goes against his core beliefs and morals -- and that's what sparked the nightclub melee captured on video.

You can see how things blew up ... 6ix9ine approached the DJ booth 10 minutes after getting rejected, some words were exchanged and then the club was flipped upside down.

Now, Lucasdirty is looking ahead to the recently announced exhibition fight between Floyd Mayweather and YouTuber Deji this November in Dubai, and sees it as the perfect opportunity to settle his differences with Tekashi.

Lucasdirty doesn't even fancy himself a boxer, but he's willing to put on the gloves if it means punching the rainbow.