I like Holaday, and there's more to catching than what the numbers can show us, presently, but Holaday was the worst framer in baseball this year. His fWAR was below replacement level.
I'm sure the Marlins could get him back on a minor league deal if they wanted to because I don't think any other team offers anything more. So it's definitely not worth, say, Will Stewart getting Rule 5'd for a replacement level catcher.