Jake Paul has questioned what help Tyson Fury can offer brother Tommy after his previous opponents suffered defeats having recruited Floyd Mayweather to their team.
Tyson will fly to his younger sibling's training camp in Las Vegas before accompanying him to Florida for fight night on December 18.
But Paul dismissed the influence of the former heavyweight world champion in Fury's corner.
"Love this," he tweeted in response to the news. "My previous opponents had coaching from Floyd Mayweather (twice) and the legendary Freddie Roach to no success... and now Tyson will try and help little Timmy."
Mayweather spent time with Paul's previous opponent, former UFC champion Tyron Woodley who went on to hand Paul his toughest test to date.
Woodley took Paul the eight-round distance but was beaten on points.
Mayweather also advised Paul's second professional opponent Nate Robinson who was knocked out in the second round.
The former pound-for-pound No.1 later said: "Nate, I'm proud of you and I will always stand behind all my brothers. I will never kick my brother when he's down.
"It's OK for people to voice their opinions on social media, but no black athletes or black entertainers, especially black NBA players should make a mockery out of you.
"We are supposed to all stand with each other through the good, bad and ugly. I'm here to uplift you and let you know we all love you and congratulate you for just making an effort."
Paul's third opponent, former MMA star Ben Askren, sought the help of Manny Pacquiao's former trainer Roach before his clash with the YouTube star earlier this year.
Roach boasted of Askren's "impressive power" but the former UFC welterweight barely landed a shot as he was stopped in the first round.
Now Tyson, fresh from his stoppage win over Deontay Wilder in their trilogy fight, will lend his considerable expertise as his brother looks to put an end to Paul's career.
"Tyson’s going to be in his corner that night. I think Tyson’s flying out there in a few weeks to help him out," their father John told BT Sport Boxing.
"Whatever desire he’s missing, Tyson will put there, I’m sure of that.
"Tyson will sort his head out so I’m looking for a Tommy win in explosive fashion – the end of Jake Paul."
