I am OKAY with this, DEPENDING on the ptbnl/prospect that the Nats get if either are from the Mariners.
1) Seattle can sign Morse to an extension
2) Zunino will be in the bigs next year as the starting catcher, leaving Jaso as a backup. Unless Montero and Zunino turn out to be awful hitters (which won't happen), Jaso's bat would only be in the lineup 2 out of every 5 games, which would be a waste.