SLFP General Secretary Professor Rohana Lakshman Piyadasa's term ends this week, party sources said.
He was appointed for 45 days to initiate and implement party reforms.
Commenting on the matter, a senior party spokesman said no decision had so far been made on the new General Secretary of the party.
Speculation is rife that former Minister Dayasiri Jayasekera, a member of the SLFP '16 group' would be appointed the new General Secretary.
Speaking to media recently, Jayasekera said he was willing to take up the General Secretary post.