I think I'd give it a second go - give the guy a setlist so he can do some work upfront (or not),
and keep it simple, no jamming, no freakin', no 10 min solos, no Mustang Sally (unless it's a must do) -
see how he gets on with that. If not, it's a nice 'we're not yet on the same page' type conversation.........
that way no-one gets bruised (hopefully).
π