Tyson Fury has parted ways with trainer Ben Davison after two years together.
The British heavyweight has a rematch with American WBC champion Deontay Wilder scheduled for 22 February.
Fury's father John criticised Davison in September after the boxer's victory over Otto Wallin in Las Vegas, saying the coaching team "should be gone".
Davison, 27, who had trained the heavyweight since late 2017, oversaw Fury's 10-stone weight-loss and the draw with Wilder in December 2018.
"Tyson and myself had to both make decisions for our careers, which resulted in our working relationship coming to an end," Davison wrote in a tweet, before adding that the pair will "remain friends".
On Instagram, Fury suggested he has chosen the late Emmanuel Steward's nephew Javan 'Sugar' Hill as his new trainer.
Steward, who died in 2012, trained Lennox Lewis and Wladimir Klistchko, while Fury worked out in Steward's famous Kronk gym in Detriot back in 2010.
Alongside strength and conditioning coach Kristian Blacklock, former coach Davison played a key part in the transformation of Fury's mental and physical health.
"I'm psychologist, trainer, friend, brother, sometimes father-son to him and sometimes he's father-son to me," Davison said about his relationship with Fury in an interview with BBC Sport in September.