Bader, 36, who is also the heavyweight champion, has been competing at heavyweight for his last four fights. His last bout was a no-contest against Cheick Kongo due to an injurious eye poke. But in May, he will be at 205 pounds.
— Ryan Bader (@ryanbader) January 14, 2020
Nemkov, 27, is undefeated in four fights in the Bellator cage. His last bout was a submission win over Rafael Carvallho at Bellator 230 in October 2019.
The fight will take place at the SAP Centre in San Jose, California.
More bouts are expected to be announced.