We are planning to bring this functionality to macOS users.
We recently added the ability to transfer ownership to another user when deleting a user’s account from AAD from the M365 admin portal. If no entry is provided, the default will transfer to the manager. https://docs.microsoft.com/en-us/onedrive/retention-and-deletion
The manager or newly assigned owner will have the ability to sync that content or download and then move to a shared library or their own OneDrive.
An error occurred while saving the commentDev Lunsford commented
As it stands, we can take ownership of a user's OneDrive, get into that URL and move the data to our own OneDrive or a subfolder in another Groups site etc (so you could have a site for archiving old data).
I'd like to be able to include another user's OneDrive to the Move/Copy target, so I could literally just get everything moved in the cloud from LeftUser straight to NewUser - even if I have to supply the new user's OneDrive URL manually and make sure I have admin rights, just being able to point to that location would solve this for me.