Bummer on the loss for the guy; but form legalease I agree with radio...if he reappears after you sold it, will result in you having to pay him back and them some for his 'loss'....yes the law is funky!
So hold on to it till you have exhausted all 'reasonable enquires' then flip it on
So hold on to it till you have exhausted all 'reasonable enquires' then flip it on