The Turkey international joined the Bundesliga club last June and has made 15 appearances for Dortmund in all competitions this season.
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However, 19-year-old Mor is already aiming higher, believing he has the potential to one day be a star for either Madrid or rivals Barcelona in La Liga.
“Dortmund is one of the best teams in the world,” he told Hurriyet. “I am learning a lot.
“I want to play for Real Madrid, to be a star. My biggest dream is to one day wear the Real Madrid jersey, even if it is a bit too early for it.
“I know myself and I think I could play for Barcelona, too. When? I do not know yet.”
Mor has scored once for Dortmund this term, while he added his first international goal for Turkey against Moldova on Monday.