South Africa are considering adding former spinner Muttiah Muralitharan and erstwhile fast bowler Chaminda Vaas to their coaching staff.

Neither Muralitharan nor Vaas have undergone formal coaching training, but Sri Lanka Cricket chief executive Ajit Jayasekara is eager to deploy their services.

"They are two of our best products, and have had huge success all over the world," said Jayasekara.

"We are looking to tap that knowledge and make use of it for the betterment of cricket in Sri Lanka. The fact that they don't have coaching qualifications isn't a big issue when you consider how much they have to offer."

The prospective roles have not yet been clearly defined, but it expected Muralitharan will be offered the post of spin bowling coach. Vaas, meanwhile, could return to work with the nation's seamers on the back of a recent relationship with New Zealand Cricket.

"I have finished my discussions with the board and they will come back to me with a decision," said Vaas, who took 400 ODI and 355 Test wickets during a 15-year career before retiring in 2010.

The 40-year-old Muralitharan is the most successful bowler in the history of the game, with 800 and 534 scalps in Test and ODI cricket respectively. He continues to play at domestic level, including a recent stint with the Melbourne Renegades in Australia's Twenty20 Big Bash League.