Veteran Manny Pacquiao will face former light-welterweight world champion Ruslan Provodnikov in an exhibition on 18 April.
Pacquiao, 47, ended a four-year stint of retirement in July when losing by majority draw against WBC welterweight champion Mario Barrios.
The eight-weight world champion called for a rematch after that defeat but has since switched his direction of travel and will compete in an exhibition bout.
Pacquiao and Provodnikov, who retired in 2016, will fight in a 10-round exhibition at Thomas and Mack Center in Las Vegas.
“I carry the Philippines with me every time I fight,” Pacquiao said.
“The support from my country and from fans around the world continues to inspire me. I’m coming back to give them a great fight – and I’m ready.”
“Returning to Las Vegas means so much to me.”