Belfast boxer Brian Magee will fight Hungarian Karoly Balzsay for the regular version of the World Boxing Association's super-middleweight title before the end of June.
The confirmation of Magee's opponent follows Balzsay's win over Kazakhstan-born Dimitri Sartison at the weekend.
The promoters are in discussions over the details of the fight, which are expected to be finalised this week.
The fight is expected to take place in Denmark or Belfast.
Magee, 36, was in Germany on Saturday to watch the victory for the WBA's current regular champion.
The WBA rate American Andre Ward as their super champion because he also holds the main WBC belt.
In Magee's most recent contest in February, he successfully defended his WBA interim belt as he stopped Markussen in five rounds in Copenhagen.
Magee's victory improved his record to 36 wins in 41 fights.
The Belfastman lost an IBF world title challenge against Canadian Lucian Bute 13 months ago but then captured the fringe WBA interim title four months later by beating Costa Rican Jaime Barboza.