The Germany international has long been linked with a move to Turin and is free to discuss terms with the club as he has entered the final six months of his contract at Anfield.
Liverpool manager Jurgen Klopp admitted to DAZN on Saturday there was a good chance Can would allow his contract to run down rather than sign an extension, although he insisted the player would not leave during the January transfer window.
Marotta appears confident of striking a deal with the 24-year-old but says they are far from finalising an agreement.
"We are in optimum position to achieve all the objectives we have set out," he told RMC Sport.
"Talks are well underway with Emre Can, but the negotiations are not at all concluded."
Speaking over the weekend, Klopp said: "He'll stay beyond the winter. Emre is still a young lad but he has developed into a great player and is very important for us.
"Sometimes a player just wants to sit out his contract. That's not cool for the club, but there are moments in which you have to accept it.
"And as long as the player behaves like Emre does, then I have absolutely nothing to complain about. He gives everything he has and identifies with the club."