De Villiers has been added to South Africa's squad for the remaining matches, but a call on his availability for the fourth match, to be held at the Wanderers on Saturday, will only be taken after he is assessed at tomorrow's practice.
De Villiers missed the first three games of the six-match series with a finger injury he sustained during the Wanderers Test.
His inclusion was the only change to the existing squad.
The free-scoring de Villiers had bruised an index finger attempting to take a catch in the 63-run defeat in the third Test against the tourists here.
De Villiers has scored 9,515 runs in 225 ODIs at an average of more than 54 and a strike rate of 101.
He holds the record for the fastest century in the format, reaching the milestone off only 31 balls against the West Indies in 2015.
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