Amir Khan's team is in talks with Manny Pacquaio's promoter Bob Arum about a possible fight in Las Vegas next year.
Arum revealed that talks are ongoing between the two camps, with dates in February and April being touted.
"We were planning for Manny Pacquiao to fight at the end of February, or at the latest, the first two weeks in April," Arum told the Sunday Telegraph.
"March is out of the question because of a big college basketball tournament in the United States. That gets all the ink at the time. I'm in the process of having negotiations with Amir Khan's uncle and his lawyer, Robert Davis, and those negotiations are ongoing.
"I know there was a report that Khan was coming here to make a deal with Ruslan Provodnikov, but he ensured me that was not the case."
Arum revealed that he considers it unethical to negotiate with more than one opponent at the same time and has identified Khan as Pacquaio's No.1 target.
"I'm not saying necessarily that the negotiations will be successful, although I believe that everybody is negotiating in good faith. While those negotiations are going on, I'm not going to discuss any other opponent for Manny Pacquiao.
"There is a possibility that it could happen in Dubai, but I think it's more likely it will happen in Las Vegas."
Khan's trainer Virgil Hunter, however, has warned the Bolton fighter that he needs to spend more time in the gym if he is to fulfil his talent.
"If you're serious about your craft and serious about making a mark on the sport and being great then it's just a matter of time before [lots of travelling] backfires on you and there's only so much I can do for you," Hunter said.
Khan has recently become involved in aid work revolving around Syrian refugees in Greece but Hunter is encouraging his man to focus on "striving to be the best that ever did it".
He added: "My job is to be honest with him and I am. And simply put, like I tell him, when you have the talent that he has, I'm not going to bite my tongue."
Both boxers last fought in May this year, when Pacquiao lost to Floyd Mayweather in their blockbuster bout at the MGM Grand, while Khan extended his unbeaten run to five with victory over Chris Algieri in New York.