Morata was snapped in Milan this week with his agent and Juve sports director Fabio Paratici.
Marotta was asked about Morata returning to Juve this summer and stated: "Now we are in the most important phase of the transfer market.
"As always, and every day, many players are linked to Juventus. This is also true for Morata, who is on the agenda today. The most important players in the Agnelli cycle who have left all have a great memory of Juventus, and almost all want to savour the climate of Juve.
"Beyond that, these are just rumours. I want to deny them because we do not want to deceive anyone."