According to Ukrinform, the match between the British champion and the Ukrainian mandatory challenger will take place at the Tottenham Hotspur Stadium in London, England, on September 25.
Usyk will hold his first title bout in the heavyweight division. He will fight for the WBA, WBO, IBF and IBO championship belts, currently held by Joshua.
The upcoming fight will be Usyk's third in the heavyweight division. He had previously beaten American Chazz Witherspoon and Briton Dereck Chisora.