Next Door Pre-Foreclosure

[Belgenman Neal]

My next door neighbors have been renting for a few years, 2 weeks ago they moved out complaining about the roof leaking.
A week later a van shows up with a "For Sale/For Rent," (One side for sale other for Rent).

A day past by and I finally see the owner of the van carrying tools into the house, so I investigate.
I find a house with smell of dog piss, blow up mattress and old man.
From out of town, Repairing what his tenants left him

That was last week, today the sign is gone, Not sold Not renting.
The man said he is letting it go,

He owes $81000 with a monthly payment of 900 a month for 30yrs, has owned it for 5 yrs.

What strategy should be use to help him?