The Bianconeri have been linked with a summer swoop for their former forward, but any possible deal now appears to be dead in the water
The Bianconeri have been heavily linked with the Paris Saint-Germain forward in recent months, with the Sweden international reportedly keen on a return to Italy, where he has also lined up for Inter and AC Milan.
However, Marotta explained that Juve president Andrea Agnelli will not fund a move for the 31-year-old attacker, telling Il Secolo XIX, "He was very clear: Ibra will not return."
Marotta also insisted that there is no tension between him and Bianconeri boss Conte, who has won back-to-back Serie A titles since arriving from Siena.
"We are in perfect harmony," he declared. "There really is no problem. "Some people would have you believe that there are opposing views among us, but that is not the case.
"Conte will coach Juventus again next year - and even the president has said that."
Indeed, Marotta has claimed that Conte will be given up to four new players to work with this summer, but dismissed speculation that Juve have already agreed terms with Fiorentina forward Stevan Jovetic.
"He is a great player, but there are no talks with him," he explained. "Even if a player is being touted by the agent, that does not mean that there are any negotiations.
"We are working to have a more competitive team, like the one that has allowed us, thanks to Conte's extraordinary work, to get back to winning again.
"This season was a triumphant march [towards the title], but I would like to add four champions to the current squad."
Juventus play their final game of the season on Sunday evening, against Sampdoria at the Luigi Ferraris.