Cummins is the latest West Indies player who follows in the footsteps of Fidel Edwards (who joined Hampshire) and Ravi Rampaul (Derbyshire) who have signed the Kolpak deal.
The trend of players opting for county cricket over South Africa national team has forced CSA to think about the long-term contracts.
Since joining Sussex, Van Zyl has scored more than 1,500 first-class at an average of over 44, despite missing much of the 2018 season through injury.
Rabada said that his parents, as young Black Africans, had their share of struggles while they tried to settle down in their professional lives but ensured that he got the best of everything.
Olivier grabbed eyeballs with his Man of the Series performance against Pakistan that saw him scalp 24 wickets in the three Tests.
Duanne Olivier has become the latest South African to quit and sign a county contract.
Olivier took 24 wickets in the 3-0 clean sweep of Pakistan and another seven in two Tests against Sri Lanka.
South African international Hardus Viljoen ended his Kolpak deal with England County Derbyshire, requested to have the final year of his contract terminated.
Since his decision, Rossouw has turned out for various T20 leagues globally and feels that he has improved as a cricketer.
Morkel will be available to play for Surrey till end of 2019 county season.