The Haye and Tyson Fury fight is off due to an injury to Haye.
Haye sustained the injury during the final spar of his training camp ahead of the sell-out bout which was due to take place at Manchester's MEN Arena.
A statement from Hayemaker Boxing said: "Hayemaker Boxing regret to inform that David Haye has been forced to postpone his September 28 bout with Tyson Fury due to a deep cut suffered during the final spar of training camp.
"The cut above his left eyebrow occurred in round two of sparring on Friday night (September 19) and required six stitches by a plastic surgeon at St. Thomas' hospital. Because of the gravity of the cut, these stitches will now remain in place for five to seven days.
"Unfortunately, after being properly assessed, Haye was left with no choice but to postpone his fight with Fury, scheduled for next Saturday night in Manchester. He is currently waiting on further medical assessment to determine the extent of the postponement."