Dubois has a history of chopping and changing his coaches.

As an amateur, his father Stan was keen to fast-track his son’s progression as he hopped between several London amateur clubs.

As a professional Dubois has had stints with Shane McGuigan, Martin Tibbs and Martin Bowers.

Dave Coldwell, former coach of David Haye and Tony Bellew, says Dubois’ decision to drop Charles “wasn’t a surprise”.

“That’s how it seems to be in boxing,” Coldwell says. “A lot of times the coach gets the blame.

“A lot of times it seems to be when the fighter is winning, the coach is great, but when he gets beat the coach isn’t good enough.”

There is also the added tension of the pre-fight party. Dubois’ promotional company Queensberry were unhappy when they discovered the event happened.

Charles went public in his defence of the party, organised in chief by Dubois’ father, insisting it was not large and a similar “gathering” had been held before the world title win against Anthony Joshua last year.

“I feel you perhaps can’t hold the coach accountable for that,” Coldwell says.

“I feel as though there are other influences other than the trainer in terms of what happens with Dubois and what goes on around the fights.”

Dubois has also dropped co-trainer Kieran Farrell from his coaching set-up.

Farrell and Charles helped guide Dubois to his first world title, but it is well known his father also plays a big role in the decision-making, alongside promoter Frank Warren.

The addition of adviser Jones, Coldwell thinks, will suit Team Dubois as he does not “interfere with any of the training”.

“Are there too many voices and things like that [in Team Dubois]? In this day and age, Anthony Joshua has 162 people around him,” Coldwell said.

“That’s what happens with fighters – it’s who you allocate the jobs to, are they the correct people, and do they stay in their lane or do they start interfering in situations they know nothing about? That’s where the danger can lie.”