Stipe Miocic's Serious About Boxing Fury & Joshua, Wants No Smoke W/ Mike Tyson

Stipe Miocic wants to box Anthony Joshua or Tyson Fury, but not even the greatest UFC heavyweight of all-time is willing to step in the ring with Mike Tyson ... despite Iron Mike being 54 years old.

38-year-old Miocic tells TMZ Sports he's intrigued by a matchup with 32-year-old Fury and 31-year-old Joshua ... the 2 baddest heavyweight fighters in the world.

"I would love [a boxing match w/ Fury or Joshua]. It would be just a different — get out of my comfort zone. Plus it’s a fight, anything can happen and I know I can make something happen.

First, he's gotta deal with arguably the most intimidating guy to ever fight in the UFC ... 34-year-old Francis Ngannou.

"I just got a task at hand right now. I gotta worry about [Francis], that’s all I care about. But, I’d love to dip my toe into that ring.

The only downside ... Fury and Joshua might be tied up with each other. The boxers inked a 2-fight deal that'll likely see them fight in the summer with a rematch in the winter.

But, there's another, slightly older, heavyweight fighter who's looking for an opponent ... Mike Tyson.

Remember, Mike's fight with longtime rival, 58-year-old Evander Holyfield, fell apart this week over money for a trilogy fight.

So, we asked Stipe about fighting Mike -- who ended his 15-year layoff when he boxed Roy Jones Jr. in 2020 -- anddd, that's smoke Miocic doesn't want.

"That I will pass on. I will pass on that one," Stipe says.

"That dude looked exactly the same when he fought Roy Jones Jr. as he did when he was 20 years old so, no, I’m good. I love Mike Tyson. I think he’s awesome."