easiest way is to offer th eguy a full refund on receipt of the goods back, that way he will have to face losing the postage and paying for the postage to send them back, most wont bother, this way you are being fully amicable as far as paypal see it, so will then ask him to provide a tracking number to you to prove he has sent the goods, and only when you tell them you have received the goods in the condition they where sent that they will give him his money back less postage either way.

hth

mark