KSI has given an ultimatum to Tommy Fury if he wants to face the British entertainment star later this year.
After engaging in a tense face-to-face following KSI's victory over Joe Fournier last May, excitement has been building about the pair settling their differences inside the ring.
Negotiations have been ongoing for some time, and with a weight of 185lbs seemingly agreed, KSI took to social media to add one more stipulation to the contest.
"Tommy, I wanna KO your a—s so badly that I'll come up in weight and do 185lbs if you agree to do the weigh-in on the morning of fight day. Nice fair fight," KSI wrote on Twitter.
"If not you will be known as Tommy Ducky.@tommytntfury."
Fury was last in action five months ago when he beat rival Jake Paul via a split decision in Saudi Arabia.