Lang is being tracked by the Gunners this season, where football chief Edu is a fan.
Voetbal24 says the midfielder is pleased with the interest as he wishes to play in the Premier League.
The youngster is rated at €40m by the Belgian title holders. Arsenal could act in January knowing Lang's profile continues to grow across Europe.
The 22-year-old emerged as Leeds United's top attacking target this past summer.
The young talent has already notched four goals and four assists in 11 games this term.
- updated September 27
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