Any advice for finding a foster or home for a dog I found?

I found a really sweet black lab mix this weekend in East Downtown.

He was chipped, his owners were contacted and they have not responded. Based on how far they live from where he was found, my assumption is he was dumped.

While I would love to keep him, I am not in a place that will work for a 40lb dog.

Does anyone have any connections with rescues who currently have fosters available?

I have already taken him to the vet so he is up to date on all his vaccinations, and they confirmed he is neutered. He was HW positive but is getting treatment now.

Thank you for your help, Reddit!