Fulham scouts have watched the Legia Warshaw midfielder closely for two years.
Reports says Cottagers boss Roy Hodgson is ready to make a move for the 18-year-old in the January transfer window.
A Fulham source told the Mirror: “We have kept an eye on Borysiuk ever since he made his league debut a couple of years ago when he was 16.
“It is clear that the Polish league is rather weak, but we see growth and untapped potential in him.
“He controls the midfield with immense grace, confidence, comfort and skill for his age. There’s still a lot of room for improvement.
“He will only get better, and with our resources he would become a star.”