Tommy Fury, 19, will fight at Manchester Arena on December 22 and has been so focused on training he missed his brother's heavyweight world title bout in Los Angeles.
Tyson picked himself up off the canvas twice to score a draw with Wilder, and even believed he had won on points.
The teen has been training with Ricky Hatton and will square up with Latvian Jevgenijs Andrejevs on the undercard of the Carl Frampton vs Josh Warrington ticket.
Tommy told BBC Sport: "He's my favourite fighter and in my opinion the best heavyweight there has ever been.
"He's my brother, so much of my motivation comes from him.
"Just watching him throughout the whole build-up, all his training, words can't describe how much of a motivation he is to me."
Tyson had been out of the boxing game for two years, after relinquishing the world titles he clinched by beating Wladimir Klitschko.
The former world champ served a backdated two-year drug ban for cocaine use and has revealed how he suffered depression, while putting on over 10 stone.
But his comeback has captured the imagination of boxing fans in the UK and worldwide.
The 30-year-old told SunSport in October he is following his brother's progress closely.
AJ set for Usyk bout, claims Warren
PROMOTER Frank Warren claims Anthony Joshua’s next fight will be against current undisputed cruiserweight world champion Oleksandr Usyk.
Joshua, who holds the WBA, IBF and WBO heavyweight world titles, is scheduled to fight on April 13 next year, at Wembley Stadium.
Although a date and venue has been announced, the potential opponent remains a mystery – despite Dillian Whyte, 30, Tyson Fury 30, and Deontay Wilder, 33, seemingly the front runners to face Joshua, 30.
However, Warren claimed it is Usyk, 31, who will be in the opposite corner to Joshua come April 2019.
He said: "I am now hearing Joshua’s next opponent for April 13 is not going to be Dillian Whyte and will be Oleksandr Usyk, let them get on with it."
READ MORE ABOUT THE NEXT HEAVYWEIGHT BLOCKBUSTER
Fury said: "He's going to do his own thing.
"I'm a big believer that if you're good enough you will do it yourself, you don't need anyone else.
"He can't just jump in and be like a world champion's brother, he has to earn his own stripes like I did."
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