A UK contest for Anthony Joshua and Dillain Whyte's old British heavyweight title is awaitng final confirmation by the British Boxing Board of Control.
In their latest circular, representatives for Sam Sexton and Gary Cornish are yet to agree on when and where the fight will take place.
The Board stated: "A new date and venue is awaited from Promoter Paul Graham," for the bout.
At super-middleweight, a fight between Jamie Cox and Rocky Fielding has fallen apart due to the former's inclusion in the World Boxing Super Series.
Cox faces WBA title holder George Groves in a daunting task and therefore will no longer pursue a shot at Fielding's belt.
"Jamie Cox withdrew from the the above contest," said the Board's release sent out at the end of last week.
An eliminator between Zach Parker and Luke Blackledge has already been approved for the Lonsdale Belt at 168, with promoter Errol Johnson securing a date of Saturday, 2"September 2017 in Burton for the encounter, which should mean Fielding gets a voluntary in the meantime.
At super-lightweight, Tyrone Nurse is set to defend his title against Jake Catterall in an all-Frank Warren clash.
The contest will take place on Saturday, 21 October 2017 at the First Direct Arena, Leeds.
A 140 eliminator purse bid between Robbie Davies Jnr and Joe Hughes was postponed at the request of both parties.
Davies lost on Saturday night for the first time in his career, meaning Hughes is likely to meet an alternative foe in his pursuit of the winner of Nurse v Catterall.