Former Bayern Munich chief Matthais Sammer has no doubts about the quality of Maximilian Philipp.
The Borussia Dortmund attacker is a long-term target for Arsenal and Tottenham.
Sammer told BILD: "Just wow! For the way he has adapted to a new club at such speed. He plays very, very creatively. He is intelligent and cautious. He is also very easy on his feet.
"This all works very nicely, is wonderful to look at. But what I have noticed for some time, that he is very disciplined, is integrated into the system. These are clean characters that are very, very important to a team. To date, a perfect match."