Having flown to Belfast from the United States, Wilder will be ringside for the fight, before potentially defending his title against Fury - providing the Brit defeats Pianeta.
Wilder gatecrashed the weigh-in of rival Tyson Fury in Belfast, ahead of his upcoming bout with Francesco Pianeta in the Windsor Park football ground on Saturday.
Wilder, the WBC heavyweight champion, stormed into the room as Fury was being weighed Friday and shouted, "Bomb squad!"
The chaos didn't stop there, either, as Wilder and Fury then had to be separated in the lobby of the Europa Hotel.
Deontay Wilder and Tyson Fury just almost came to blows after Fury's weigh-in in Belfast. the question is - do the guys REALLY want smoke or was it all for show?
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Tyson Fury responds to taunts from Deontay Wilder.
A burly security guard stops that happening but the fiery row continues to get the crowd going. Joshua's old news. The new kid in town is Fury. Joshua will fight Alexander Povetkin on September 22 at Wembley Stadium, and Wilder could be destined for a fight with Fury later this year. "Ours is the biggest fight".
Carl Frampton may be feeling more like a warm-up act at his own show after that display, but he had a fairly uneventful morning in comparison, weighing in at 126lbs exactly.
Wilder also dismissed Anthony Joshua just as brusquely, saying: 'Tyson will win here on Saturday night and then I will knock him out when we fight.