They will fight for the vacant WBF intercontinental junior middleweight title in the triple-championship tournament that will be organised jointly by Brown Bomber Promotions and the Eastern Cape government.
"Clearly I am not taken seriously when I say enough is enough with local opponents, so I have no choice but to make a statement," warned Mhlongo yesterday.
"I made a plea with promoters in September last year to get me international opponents."
That was after the underrated yet enormously talented fighter had demolished Tebogo Malose over six bloody rounds at Nasrec Arena near Soweto on September 29.
The fighter from Eshowe in KwaZulu-Natal, who is trained in Gauteng by Sechaba Mabuya and Andrew Matabola, chalked up the second defence of the national belt.
"Local boxers still accept offers to fight me probably because they think I'm a joke. But we will see who has the last laugh on Saturday," warned Mhlongo.
Mhlongo has 10 short-route wins in 12 victories against two defeats. He has not laced boxing gloves since toying with Malose.
Meanwhile, Bongani Mlotshwa has promised to make a positive debut at home when he takes on Johannes Pietersen from Toekomsrus for the vacant WBF Africa middleweight title.
The main attraction is a grudge fight between SA women's champion Julia Tshabalala and Rita Mrwebi. Action is set to begin at 1pm.