They have to IL Jeffers if he's unavailable, you can't go into battle with one catcher and a Kody.
Of course you could keep Jeffers active and send down Lewis.. only if you're sure Buxton is ready to play. The zombie Twin is becoming a thing.
Can't win for winning. And the schemer in me calculates whether this improves the odds of Jeffers remainjng a Twin in the same way the Ryan injury did.