He will defend his title against Joshua
British Daniel Dubois (21-2, 20 KO) “got promoted” and became a full-fledged IBF heavyweight world champion.
Ukrainian Alexander Usik vacated his championship title in this division, who ceased to be the absolute world heavyweight champion. The IBF belt was supposed to be up for grabs between Dubois and Anthony Joshua (28-3, 25 KO), However, the British Derby will now be held as Dubois’s first title defense.
The head of the promotion company Queensberry Promotions, Frank Warren, reported that the Dubois and Joshua teams are negotiating a fight. The British Derby is scheduled for September 21st. The arena for the event will be Wembley Stadium.
Dubois finished the fight with Filip Hrgovic in the eighth round. The fight took place as part of the “5 on 5” event in Riyadh. The British heavyweight won the title of “interim” IBF champion in a fight with the Croatian.
Joshua won his last fight against former UFC world champion Francis Ngannou. After the fight, Eddie Hearn called Anthony the number 1 heavyweight boxer in the world. Joshua himself spoke about his desire to hold his next fight in June, but he was offered to postpone the fight until September.
Source: Sportarena

I am Ashley Ortiz and I am a professional journalist working for Athletistic. My specialty is in sports journalism, particularly boxing. I have written articles for some of the most renowned publications on the subject, and my work has been featured across both print and digital media platforms.