Miller recently picked up a stoppage win over Polish giant Mariusz Wach as part of Eddie Hearn's first American card, which took place at Nassau Coliseum in Uniondale, New York. Hearn is the promoter of Joshua.
After watching several of Joshua's recent fights, Miller feels the heavyweight champion has a big weakness - his chin. Joshua was rattled by Dillian Whyte and dropped by Wladimir Klitschko, and some felt he was starting to wilt a little bit with Carlos Takam.
Joshua has a jacked frame, with over 250-pounds of muscle and punching power in both hands.
Miller believes that he's inching close to securing a world title fight with them.
"I think either the next fight, or one fight [away] for sure," Miller exclusively told Sky Sports. "I wasn't really pleased with my performance, even though it was still a win. I'm about getting the job done.
Miller does not believe Joshua is actually serious about facing the top names - like WBC heavyweight champion Deontay Wilder. The Brooklyn boxer has already gone on record and stated that he believes Wilder would knock Joshua out is they ever met.
Miller sees himself as the roadblock between Joshua and Wilder - but he doubts Joshua would want to fight either of them any time soon and would rather continue making defenses in the UK.
"He's full of cr*p, because he's said already he doesn't want to go to America right now to fight. He's said he doesn't want to go to Vegas and fight any time soon. He's got to get his story straight. One minute he wants to fight Deontay, then he wants to come to America. I don't know?," Miller said.
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