Josh Taylor will defend his IBF and WBA titles against Apinun Khongsong in London on 26 September.
The mandatory bout was originally scheduled for 2 May but was postponed because of Covid-19.
Scottish super-lightweight Taylor is unbeaten in 16 fights, 12 of which have been won by knockout.
The 29-year-old hopes to challenge WBC and WBO title holder Jose Carlos Ramirez if he defeats Thailand’s Khongsong, 25.
Ramirez, 28, has put a move to welterweight on hold until he’s undisputed champion.