Dereck Chisora will face Kubrat Pulev on May 7 with a world title shot and the European championship on the line.
The winner will earn a crack at the IBF heavyweight championship currently owned by Charles Martin, who will defend his title against Anthony Joshua on April 9, live on Sky Sports Box Office.
Should Joshua win Martin's belt, he could immediately be put on a collision course with domestic rival Chisora if the Finchley heavyweight can win a sixth consecutive fight against Pulev in Hamburg.