The Sharks Super Rugby team is considering moving to one of the stadiums built in South Africa to host the 2010 soccer World Cup.
The Sharks say they are in talks with Durban's city council over playing at Moses Mabhida Stadium from next year, though no agreement has been reached.
The fate of some of the expensive new stadiums following the World Cup has been a burning issue in South Africa, with most of them underused and criticized as a waste of money.
The Stormers rugby team decided against moving to Cape Town Stadium after negotiations with the municipality there fell through, leaving that venue with little business. Cape Town was the most expensive of the new stadiums at a cost of around $600 million.
Moses Mabhida Stadium, which will be the main venue for the 2022 Commonwealth Games in Durban, cost $450 million.