Move.
Good luck moving with that purported eye-sore next door!
Move.
He could be disabled or incapable of looking after a house, he could be skint, he could be in a bad place.
In before smash pasty
....i am not sure you know what this means.
, as its Gd hes bound to get some totally monged out replys. 
Yep, people generally don't let things fall apart if they are happy with life.He could be disabled or incapable of looking after a house, he could be skint, he could be in a bad place.
Put a 6ft high fence up and forget about him.
Are you sure that he actually is still alive?
.Don't forget to report any kids playing football on the grass too,Regarding the glass thing, you could quite reasonably report this to the police?