Daniel Cormier Pumped for Stipe Miocic Fight, I'm Gettin' 7-Figures!

Daniel Cormier says he's excited to get a crack at Stipe Miocic -- "the greatest heavyweight champion of all time" -- and says the huge payday ain't bad either!

D.C. joined the guys on the "TMZ Sports" TV show (airs tonight on FS1) and explained why the fight against Stipe at UFC 226 in July is an opportunity he just couldn't pass up.

Cormier says Dana White first approached him as he was leaving the octagon after beating Volkan Oezdemir at UFC 220 this past weekend ... and used his powers of persuasion (aka his checkbook) to get the deal done!

D.C. -- the reigning light heavyweight champ -- says he conferred with his good friend, Cain Velasquez, before accepting the fight because he didn't want Cain to feel like he was cutting him in line for a shot at the heavyweight belt.

And if Cormier beats Stipe ... D.C. says it would put him in the conversation about the best fighters of all time.