A Justin Bieber Tom Cruise Fight Might Actually Happen?

Wait…what????  UFC’S Dana White tells TMZ Sports there’s a very REAL chance the two could actually throw down in the Octagon.

After 25-year-old Bieber tagged the UFC president in a twitter post last week calling out 56-year-old  Tom Cruise, White says he blew it off initially … until he got some phone calls from “real guys” connected to the superstars.

Dana wouldn’t say who he spoke with but was clear they’re legit — and they told Dana both Tom and Justin “really wanna do this fight and they believe that Tom Cruise would do the fight.”

“I told them that if that’s true — and everybody involved really wants to do it — we can talk.”

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