Lost dog-free to good home (Seligman)

Found dog/no collar, looks like boxer mix, chocolate brown with white chest.
I have no close neighbors-dog seems to have been on his own for awhile-very thin, limping.
I can feed him for a couple days but cannot keep him.
Fixed male, looks like.
Gentle.
Gets along with my dogs but needs care that I can’t give him.
Could meet someone in town for a good home.