Guinness Pro14 chiefs are in discussions over the possibility of expanding the competition through the addition of more South African franchises next year.
The coronavirus pandemic means the Cheetahs will be unable to take part in the 2020-21 competition until January, while the Southern Kings have entered administration.
Once a replacement for the Kings have been found, it is hoped that more South African teams will join as talks with South African Rugby continue.
"SA Rugby's long-standing commitments are to field two teams in the Pro14," a statement read.
"In light of the withdrawal of the Southern Kings, discussions are ongoing about fulfilling this agreement from 2021 using a replacement team from its current professional franchises.
"Additionally, Pro14 Rugby and SA Rugby are in early discussions about potentially expanding the tournament and deepening our partnership to include more South African franchises from 2021."