Pollock has missed South Africa's last five Tests and three one-day internationals because of chronic inflammation of his left ankle.
"Even if he can give us 10 of 15 overs a day, that would be good," South Africa coach Ray Jennings told reporters on Wednesday.
Jennings hinted there may be a ready made place for Pollock in the team.
"Monde (Zondeki) has a bit of a niggle with his thigh, and 'Nella' (Andre Nel) has a sore back," he said.
"I
South Africa won the third Test in Barbados by an innings and 86 runs to take an unassailable 2-0 lead in the series but Jennings said victory in the final match would set his side up nicely for the one-day internationals.
"I don't want to lose the pressure that we have put the Windies under.
"Their media are coming hard at them and there is a lot of pressure from the public on them, and we need to use it well with a view to the one-day series," he said.
The first of five one-day internationals between the two sides is in Jamaica on May 7.
