The Croatian and the Briton will cross gloves on June 1 in Riyadh, Saudi Arabia.
"I think Hrgovic is a big favorite in this fight. I really think so. I look at Filip differently than others in the sense that I think this guy is an elite super bantamweight. Hrgovic has been an elite fighter for a long time. He just hasn't had fights where he can really showcase that. Has he not passed his peak? I don't think so. Hrgovic is just now reaching his peak," Boxing News quoted Hearn as saying.