Julian Brandt trained with Kai Havertz at Bayer Leverkusen on Thursday.
Leeds United have submitted a formal bid for the free agent.
Negotiations with Leverkusen over Brandt’s contract remain underway.
Leeds are understood to be at the forefront of the race to sign him before his contract expires.
This comes as multiple reports show the English club’s active pursuit of the German midfielder.
Both clubs are said to be weighing their options carefully.
Brandt’s versatility and acceleration have garnered interest from several European teams.
Leeds’ manager praised the German's imagination and intensity.
If the deal goes through, Brandt could sign with the English side before the summer window closes.
Fans are already wondering about his likely role in the midfield.
The transfer could also free up funds for Leeds to strengthen other areas.