Marcelo says Real Madrid needs to "pay me up" and he will leave this summer if they want him to.
Marcelo has been linked with a move to join Cristiano Ronaldo at Juventus.
"If I am on the list of players [Madrid] want to sell, then they can pay me up and all is sorted," Marcelo said. "I trust in myself, in my work, but if a day comes when Real Madrid do not want me, I'll go. I will be sad, but I'll go. But I am sure I will not be kicked out."
Marcelo has been targeted by opposing teams during his recent poor run of play.
"The level I have been showing is difficult to always maintain," he said. "I am a little below that level at the moment, but my career has been like that, some little dips, and unfortunately this season I had three injuries in two months. I went through a difficult period in my football and within the club.
"But that phase is over now, I need to play to get back to my usual form and confidence. But I feel good now, physically good, I am training strongly. I need to play to get back my confidence, but physically I am good."