The saga of the WBA's so-called "regular" heavyweight title continues.

With Manuel Charr about to be stripped of the secondary belt because of a failed drug test, mandatory challenger Fres Oquendo was supposed to face contender Jarrell "Big Baby" Miller for the belt in the main event of Matchroom Boxing promoter Eddie Hearn's next United States-based, DAZN-streamed card on Nov. 17 at Boardwalk Hall in Atlantic City, New Jersey.

However, Oquendo eventually turned down a $500,000 offer for the bout because he did not believe there was enough time before the fight to adequately implement a Voluntary Anti-Doping Association testing program, a source with knowledge of the offer told ESPN on Wednesday.

So with Oquendo out, the fight was offered to Bogdan Dinu (18-0, 14 KOs), 32, of Romania, who has accepted but is waiting on Miller to agree to terms, according to the source.

The 6-foot-5, 245-pound Dinu is scheduled to fight British journeyman Tom Little (10-6, 3 KOs) in a stay-busy fight on the undercard of Saturday's heavyweight title eliminator between Kubrat Pulev and Hughie Fury in Pulev's hometown of Sofia, Bulgaria.

However, if Miller agrees to the fight, Dinu will be allowed out of the Little bout and head to New York, where Hearn is planning to announce the show at a news conference on Saturday afternoon. The announcement would take place before the card headlined by the Daniel Jacobs-Sergiy Derevyanchenko vacant middleweight title bout that Hearn is promoting later that night at the Hulu Theater at Madison Square Garden.

The 6-4, 300-pound Miller (22-0-1, 19 KOs), 30, of Brooklyn, New York, is coming off a one-sided, second-round destruction of faded contender Tomasz Adamek (53-6, 31 KOs) on Hearn's first U.S. DAZN card on Oct. 6 in Chicago.

Charr (31-4, 17 KOs), 34, a Syria native who fights out of Germany, was supposed to make a mandatory defense against Oquendo on Sept. 29 in Cologne, Germany, but Charr tested positive for two banned substances, the anabolic steroids epitrenbolone and drostanolone, in a VADA urine test and the fight was canceled.

Oquendo (37-8, 24 KOs), 45, of Chicago, has not been a relevant contender for years and has not boxed since losing a majority decision to Ruslan Chagaev for the same vacant secondary belt in July 2014. Injuries and other issues prevented him from fighting for the title again since, but the WBA was obligated to give him a title opportunity based on a federal court order after Oquendo won a lawsuit against the organization to enforce his rights.