Julian Brandt trained with Kai Havertz at Bayer Leverkusen on Thursday.
Leeds United have submitted a registered bid for the free agent.
Negotiations with Leverkusen over Brandt’s contract remain ongoing.
Leeds are understood to be leading the race to sign him before his contract expires.
This comes as multiple reports confirm 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 inventiveness and work rate.
If the deal goes through, Brandt could join the English side before the summer window closes.
Fans are already wondering about his possible role in the midfield.
The transfer could also release funds for Leeds to strengthen other areas.