Hrgovic is in an extremely difficult situation, maybe a good performance against Wallin could change something, Wallin himself stated that he wants to fight Hrgovic, so I don't see anything that could make this fight not happen...
He was copromotor, main promotor were Saureland brothers. Their agreement expired and Hrgovic had a long beef after Hearn did not secure him good oponents.
Hrgovic was with Wasserman and his career was stuck, no reason to continue that. Matchroom was copromoting him, maybe they can deliver Wallin/Joshua/Usyk/White for Hrgovic, and that would make sense. PBC HW scene is totally frozen, no reazon to go there. Top Rank is a viable situation, several decent names, works with Queensberry. IMO, the best situation is to sign for 3 fights on 24 months, kind of deal. That way his career wont be stuck again.
Did Hearns interest in Hyrgovic end when he realised being the IBF mandatory was not enough to prevent the Usyk v Fury undisputed fight taking place?
Dull fighter with little fan base. I fell bad for him because, flawed that he is, he is definitely a top-ten guy, and probably top five. But the reality is that he has done nothing to make himself marketable.