Abbas has not visited the enclave since his forces were pushed out in 2007 by Islamists Hamas, who have controlled it ever since.
Earlier today, the two sides announced they had reached agreement on aspects of their decade-long split during talks mediated by Egypt in Cairo.
Details of the agreement have not yet been released and a press conference is expected at 3.30pm IST in the Egyptian capital.
One of the key issues has been punitive measures taken by Abbas against Gaza in recent months, including reducing electricity payments that left the territory's residents with only a few hours of power a day.
"All the measures taken recently will end very shortly," Agha added.
Since the near civil war in 2007, the two Palestinian factions have been at loggerheads -- complicating any potential peace talks with Israel.
Multiple previous reconciliation talks have failed.
Last month, Hamas agreed to cede civil power in Gaza but the fate of its vast military wing is a significant stumbling block and the Islamist group remains effectively in charge in the enclave.
(This story has not been edited by Business Standard staff and is auto-generated from a syndicated feed.)