The former president of Haiti Jean-Bertrand Aristide will reportedly arrive in Port-au-Prince on Friday, ending seven years of exile in South Africa.
The planned return comes just two days ahead of Haiti's crucial run-off presidential vote.
However, Mr Aristide says he will not be involved in politics.
The move risks re-opening old wounds and reviving deep political grudges related to his being overthrown and forced out of the country.
His spokesperson says he will arrive on a private plane.
Members of his Lavalas party are planning a rally at the international airport in Port-au-Prince to welcome him home.