It was announced last week that Fury's scheduled rematch against Wladimir Klitschko has been postponed for a second time, due to the Briton being "medically unfit" to fight.
Fury, who pulled off a major upset by beating Klitschko in Dusseldorf last November, was forced to initially delay the rematch due to an ankle injury.
A statement detailing Fury's current health issues is expected on Tuesday, but his uncle Peter has provided an insight into the 28-year-old's struggles - citing negative media coverage as a significant factor.
