Negotiations have begun regarding a welterweight unification bout between Britain's IBF champion Kell Brook and America's WBO title holder Timothy Bradley.
Ruslan Provodnikov of Russia and Argentine Diego Chaves are other possible opponents for Brook but Hearn held talks with Bradley's representative, the Top Rank CEO Bob Arum, at the weekend.
"Kell Brook is due to fight on October 24 in Sheffield. We had a very interesting meeting with Bob Arum in London and we really want to make the Tim Bradley fight,” Hearn said.
"It's a fight that's such a great fight. I rate Tim Bradley as one of the very best welterweights in the world, as I do Kell.
"We've also agreed terms with Diego Chavez if we want that fight. It's a tough fight. It's one that Kell might not get as much credit but you've got a guy coming off a draw with Bradley. People ask who he is but trust me, this is a tough fight.
"We're also in talks with Ruslan Provodnikov, which is a fight I really like as well. Kell is in camp now and ready to go. It's tough matching him because people know how good he is. I think Brandon Rios decided he couldn't win the fight.
"We need to find the guys that really believe they can beat Kell and I think Bradley is one of those fights. It will happen, whether it's in October or November or February or March. The feedback we're getting from Top Rank is that it can definitely happen."
The 31-year-old Bradley has fought some of the biggest names in boxing and controversially defeated the great Manny Pacquiao on a split decision in 2012.
He then suffered the only defeat of his pro career when Pacquiao won the rematch on a unanimous decision last year.
However, Bradley beat Jessie Vargas in his latest fight to claim the interim WBO title and inherited the belt full-time when it was stripped from Floyd Mayweather Jnr in July.