Duminy, who injured his hand during the third ODI, has been missing from action since and will require a few more days to achieve match fitness.
"It's unlikely JP is going to play the game tomorrow. We haven't finalised the team yet. The selectors have come down from South Africa so we will sit tonight and talk about the team," said Test skipper Hashim Amla in the pre-match conference at the PCA stadium here today.
Pacer Morne Morkel's fitness is also under question and Amla said that the final call will be taken on the morning of the match.