All I can think of...if he has to go to a new home, I would like to see him as an 'only child' and an indoor kitty.

NOT taking him to the vet for a peeing problem is cruel and neglectful, just my opinion. Kitties with urinary tract infections can be in a lot of pain. It might be crystals, which can usually be cleared up by a change in diet. Can YOU take him, at least for a week or two, and get him checked out by a vet? Even if he has to live in the bathroom for a while at your place...

If funds are tight, there are folks here who will gladly help.

If he IS going to a new home, I think being an 'only cat' in an indoor home would be preferable.