No, the Palestinian Authority is the governing body of the West Bank. It was kicked out of Gaza in 2007 after a conflict between the Islamic Hamas organization, and the secular Fatah party. It would certainly have motive to form an alliance to try to help, in order to re-establish its control of Gaza, and a large portion of the Gazan population would welcome it.

The "right of return" by people forced off of their ancestral land which is now within the borders of the State of Israel has been one of the major sticking points in the conflict, with Israel steadfastly refusing it. If it is not willing to let refugees return to their homes in its own country, then how is it fair to ask other countries to accept large numbers of refugees? There are other forms of help besides accepting refugees.