For Giovinco, who has accused Juve of not believing in him, Marotta suggested that the Turin giants were keeping their options open.
"We made a provisional choice with Giovinco," he said.
"He's co-owned and it is right that he follows his own path to become the important player which we and he believe he can become.
"We have an excellent relationship with Parma, but it will be down to Giovinco to turn his potential into reality. He plays for the Italian national team, so he is evidently good enough for Juventus."