Fox is expected to soon name Marianne Gambilli the head of ad sales for "New Fox," adding duties that are now handled by Joe Marchese.

Gambelli, who has lead ad sales for Fox News since May 2017, will assume responsibility for advertising across the broadcast, news and sports assets that will be spun off into a new company once Walt Disney closes its deal for 21st Century Fox, according to a person familiar with the situation. The news was first reported by The Wall Street Journal.

Gambelli joined Fox News from Horizon Media, where she was chief investment officer. She previously spent 22 years at NBC Universal.

Marchese, who has overseen advertising for Fox Networks Group since May 2017, will step down once the deal is closed.

He was a co-founder of the ad tech firm TrueX, a company that Fox acquired in February 2015 and will stay with Disney when the deal for 21st Centrury Fox closes.

Marchese has been a proponent of cleaning up the TV ad model, experimenting with things like six-second ads and reducing commercial loads in prime-time programming.