As much as I would like to see Gattis put up 25+ HRS and an .800 OPS, I just don't see it. ATL will be fortunate to get around 30 HRs from the catchers again this year (McCann 20, Gattis 8 as a C, Laird 1)
I would guess between 18-22 HRs and .775 OPS.
Here are the MLB HR leaders at catcher...