The Bianconeri have axed Gigi Del Neri after failing to qualify for Europe, despite the fact he has another year to run on his contract.
"We will announce the new Coach in a few days," Marotta told Sky Sport Italia.
"Juventus will make Conte official on Monday. We thank Del Neri for everything he has done this season and it was a painful decision to change.
"Next year we will confirm most of the current squad and will add some world class reinforcements."