I've been high on Jeffers for a couple years. He's not great on D, but he can DH when not catching or we can late inning sub for D, if needed.
Goodman, Langeliers and even Alvarez will be very costly.
I hate giving up a lot for a rental, so I'd kick the tires on longer term solutions, but Jeffers might be who we settle on, especially if we find a longer term solution at SS/2B.
We could also use a pitcher.
I doubt we trade the future for 3 major add-ons.