Advise deom a none lawyer.
We just got a call from the guy that owns the place next door (he lives on the east coast), and he said the previous owner left him a msg that he is going to be visiting somebody in our neighborhood next week and he wants to gets some more stuff out of the house.
Have the owner email you the information that he told you on the phone. In case of dispute you MIGHT be able to prove he called you, but not what was said.
I'm trying to figure out if I should call the sheriff with advance notice of possible problems...?
Definately YES.
Probably a good idea for the new owner to call the sheriff also, and inform him that the person is not to take anything and that you are authorized to stop him. Should be in writing also.