South Africa is finalizing an implementation plan for an $8.5-billion climate finance deal with some of the world’s richest countries even as the head of the Presidential Climate Finance Task Team quit, a government spokesman said. An offer to extend the contract of Daniel Mminele, the head of the team, for three months “is on the table,” Vincent Magwenya, spokesperson for President Cyril Ramaphosa, said by text message late Thursday. Mminele quit after his contract expired as of the end of the year, Business Day reported earlier, adding that it had been expected that he would stay in the post.