The only reason I think Harry might be given a job, and I stress it’s a very slim one, is because Charles is faced with the impossible task of covering overseas tours requested by the FO and nurturing the Commonwealth without much back up.
Ordinarily the Waleses would be first in line, but we know the tours can be gruelling so Catherine is unlikely to manage them for a while, and William may not want to leave her to do them solo.
The Edinburghs have been picking up the slack but there’s only so much they can do.
Charles himself has health limitations, as does Camilla.
The idea of bringing Andrew on board is unthinkable.
I personally wouldn’t want to see Harry back in the fold as though nothing had happened, but it’s not me having to shoulder the work. William may decide that discretion is the better part of valour and having Harry abroad on a tour is less trouble than having to deal with him at home.