British heavyweight David Price will now face Hungarian fighter Istvan Ruzsinszky in his comeback bout on Saturday.
Price had been scheduled to meet Konstantin Airich in an eight-round contest in Stuttgart, but the Kazakh boxer failed a medical on Thursday.
Ruzsinszky, who has a professional record of 12 wins in 22 encounters, has previously lost to fellow British fighter Ian Lewison over four rounds.
Price is competing for the first time since suffering a second defeat to American Tony Thompson in July.
