Boxing Promoter Eddie Hearn

... But I Love It

Eddie Hearn -- the promoter in charge of Anthony Joshua's career -- says the fight between Logan Paul and KSI is an insult to hardcore boxing fans ... an insult he'd LOVE to promote.

Hearn basically controls boxing on the other side of the pond ... promoting not only AJ, but stars like Amir Khan, Daniel Jacobs and Tony Bellew.

Being that the fight is happening in his backyard in Manchester, we had to get Hearn's take on the event, and he told us he HATES IT and LOVES IT, all at the same time.

"How can you not congratulate them? This is a venture that's got a lot of people talking. Again, from a hardcore boxing fan's point of view, it makes my skin crawl. But, from a promoter's…