The 29-year-old was strongly linked with a move to Premier League giants Liverpool, but Marotta insists the midfielder will not be leaving the club.
“We get so many offers for our players, but we are used to buying – not selling,” Marotta told Premium Sport.
“Our focus is strong and I think Claudio’s first thought is to finish his career here. Not only Liverpool, we have received several offers.”
Marchisio signed a new five-year contract with Juventus in July.