WBC heavyweight world champion Fury announced his retirement in April after beating Dillian Whyte at Wembley, claiming he had not got "anything more to give" and that "no amount of money" would lure him back.
Few thought it was the end of the road for Fury, 33. However, the belief was that he would pursue a fight for the undisputed heavyweight championship - Oleksandr Usyk defends his three titles in a rematch with Anthony Joshua on August 20.
The focus on Chisora, who snapped a three-fight losing streak with a split-decision victory over Kubrat Pulev last month is a surprise, especially given Fury has twice defeated the Londoner in lopsided fashion, most recently in 2014.
