On Wednesday, the former world champion, 45, revealed that he had agreed to the exhibition bout which is due to take place in November.
But, he claimed that he has no idea who his opponent actually is.
When speaking to TMZ Sports about his upcoming fights, the Michigan-born boxer said: “I’ve got one with the guy Deji.
“I want to make sure I’m saying it right, it’s Deji right?
“We will be doing an exhibition in Dubai at the Coca-Cola Arena, that is in November.”
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Although he claims that he is still unsure of who Deji is, Mayweather and his team have reportedly been in talks with the YouTube star for weeks in an attempt to secure the fight.
Deji, 25, recently defeated American YouTuber Fousey, 32, at the O2 Arena in London.
It marked his first boxing win following three successive losses against Jake Paul, Alex Wassabi and Vinnie Hacker.
He is now preparing to face the self-proclaimed Best Ever in a highly-anticipated exhibition in the Middle East.
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Meanwhile, Mayweather is set to face MMA star Mikuru Asakura, 30, in an exhibition on Sunday.
It will be his fourth bout since retiring professionally in 2017.
He is also in talks with Conor McGregor over a potential rematch after defeating the ex-UFC star five years ago.