MTN and India's Bharti Airtel are still locked in negotiations regarding a potential merger, which would create the world's third-largest telecommunications company.
The South African cellular network company today issued a statement reiterating 25 May's cautionary announcement, and confirming that it is still in place.
A merged company would boast revenues of about $20-billion and more than 200-million customers.
Meanwhile, Reuters reports that Bharti might be considering the issue of global depositary receipts to MTN and its shareholders.
Under Indian regulations, MTN would only have to make an open offer once it converts these receipts to shares.