Are you anywhere near any of the larger Cathedrals.
Most of these have stone mason workshop attached,where the mason carry our repairs and restorations to the stonework.
I don't say they will have vacancies,or that your cathedral will have a worskshop.Even if they don't they ARE stone masons, and may be able to suggest something positive for you bloke.
This:~
http://www.masonslivery.co.uk/
is the website of The Worshipful Company of Masons,the city livery company that looks after masons.
They may have some suggestions?
I wish you and your bloke all the best!
Alec.