Theban Tomb 15: who pays for conservation?

I have earlier commented on the Louvre's return of the wall fragments from Theban Tomb 15. Paul Barford has written a discussion of the need to conserve the tomb. Should France be asked to take responsibility?

I think the French government should now be invited to take patronage over TT15, do a proper conservation job and perhaps restoration, and then find a way of making this tomb more secure from further attacks, but also allow its opening to the public and bear all the costs. If they want to "preserve the past", fine. Let them actually do it and not add to the destruction by financing it.

Perhaps the gallery and auction-house that handled the fragments could also be asked to make a contribution.