Only "out" I see is if you can document his "peeping behavior" on video....then it becomes a police matter, restraining orders and legal grounds to evict him.Otherwise you have to hope he violates something else on lease....My gut feeling is the "cash for keys" is a very iffy offer for a creepy guy like this...... most of them seem to relish the fact that they are creeping you out, so it will add to the thrill for them.