Marotta revealed negotiations were on last night.
"Tevez? In terms of quality and experience, we are not the first to notice him," said Marotta.
"He wants to make up for lost time, as his years at Manchester City were not the best. We have not made any approach towards the English club.
"It is clear that at this stage of the season agents step forward and I will not rule out a meeting in that sense. We could reach an agreement with them, but then we'd have to strike a deal with his club too."