A former favourite at Signal Iduna Park is a big fan of the prolific Norwegian striker, but feels there is still plenty of work for him to do
Erling Haaland is "not yet a world-class player", with Borussia Dortmund legend Jurgen Kohler considering Kylian Mbappe to boast greater potential.
Two exciting attacking talents are being tipped to become the next superstars of world football as they follow in the footsteps of all-time greats Lionel Messi and Cristiano Ronaldo.
Dortmund great Kohler, who won two Bundesliga titles and the Champions League with the club, is a big fan of a Norwegian forward tearing up German football, but feels there is still work for him to do.