A middleweight battle between Yoel Romero and Paulo Costa could potentially headline UFC Fight Night on April 27.
Combate first reported the possible bout, and according to Brett Okamoto of ESPN.com, the UFC is "targeting" the bout as a headliner. However, Romero is currently competing in the reality show Exathlon and has been unavailable to confirm the fight.
The UFC could finalize the match as soon as next month.
Organizers have reportedly been attempting to get this fight together for months, including UFC 230 in November, but the two sides have failed to complete a deal.
Romero is coming off a second loss to Robert Whitaker in June but has been filling his time in other ways. The first episode of the season for Exathlon aired Monday.
The 41-year-old remains a big draw with a 13-3 record while ranking as the No. 1 contender in middleweight.
Meanwhile, Costa is one of the top up-and-comers in the division. The 27-year-old has posted a 12-0 record, featuring 11 knockouts and one submission. He most recently earned a second-round knockout of Uriah Hall in July at UFC 226.
Although nothing is official, Costa could get his biggest opportunity yet in April against Romero at AmericanAirlines Arena in Miami.