Ok, if we are all speculating I’ll pitch in with what I would do.
Fly out an engineering Tiger team from Airbus (and AF of course) along with a replacement engine, complete pylon, electrical connections, hydraulics, fuel piping, miscellaneous connectors, and a test pilot. Test fly the repaired aircraft in situ, and then ferry it back to the AF depot hub for a more thorough overhaul.
I don’t see the 3 engine return as either safe or even feasible with the asymmetrics and load balance/trim that would be required.
I’m prepared to put the entire $27 value of my 401k on my bet - any takers ?