Goal understands Manchester United were lining up a €54 million offer for the 27-year-old after Louis van Gaal had approved the move.
When asked about his future on Thursday, Vidal ruled out a switch to Old Trafford but conceded that he could leave Juventus this summer, although Marotta believes the Chile international was misinterpreted.
"It’s very simple. Vidal extended his contract with us last season, as there was a mutual desire to continue this rapport," Marotta told reporters.
"There is no reason for him to leave. Yesterday he gave an interview in a rushed and embarrassed manner, as he was getting his luggage and so he was misinterpreted.
"I can confirm Vidal is happy to be with us and there’s no reason for alarm. He had problems with the knee injury and rushing the recovery for the World Cup, so it will take a while to find his fitness.
"Nobody can doubt the quality of the player, nor how strong his bond is with Juventus."
When asked whether he would be surprised if Vidal requested a transfer this summer, Marotta replied: "Absolutely yes. It is a very remote chance, considering what he is like, and so I’m not even considering the possibility.
"The situation around him is typical of the transfer market when several big clubs admire him. Vidal exploded in a fairly unexpected way over the last two years to become one of the best players in the world.
"He is naturally linked to big clubs, but I’ll point out Juventus are a big club, too. And we intend to hold on tight. I don’t get the feeling he wants to leave us."
The 2014 Goal 50 will be announced on Monday 28 July. Who will win the prestigious annual prize ranking the 50 greatest players in the world from the past season? Get involved in the debate on Facebook or Twitter using the hashtag #Goal50