The youngster is part of the club's new transfer strategy, which the Daily Mirror suggests will focus on young and upcoming players, rather than world stars.
The 17-year-old has shown what he can do at first team level this season.
But former Belgian international and ex-Oostende boss Gert Verheyen has told the player to stay put for now.
He told Het Nieuwsblad: "That kind of midfielder, a combination of vision, power and technique, is very popular.
"He can play in three positions in midfield. He can take a ball and pass. But where would such a boy play at a top club like Club Brugge?
"Someone like Vranckx should only focus on playing.
"That is why it is better to stay with KV Mechelen. Because he may also experience a relapse, as is often the case with young players."