Watch: Ousmane Dembélé embarrassing defenders during Dortmund's preseason

Pre-season matches have only recently begun for Dortmund, but Ousmane Dembélé is already putting on a show. The 19-year-old Frenchman was the first of six new players signed by Thomas Tuchel so far this summer, but he's probably the new arrival with the highest potential.

Watch this compilation of his time at BVB so far. It won't take long for you to be impressed.

Increíble vídeo de los primeros detalles de Dembelé en Dortmund. Camino de triunfar en la élite. pic.twitter.com/E4GTq088dB

— Andrés Onrubia Ramos (@AndiOnrubia) July 17, 2016

Dembélé joined from Rennes for €15 million after scoring 12 goals and notching 5 assists in Ligue 1 last season. That's very promising production from a wide player who was playing in his first full season in a senior league.

Ousmane's immense talent and potential has been known for a while. Mikael Silvestre has said that Dembélé reminds him of a young Cristiano Ronaldo. After watching this video, it's not hard to see what Silvestre has seen.

We were quite lucky that we were able to buy a young star-in-the-making for only €15 million. Compare this with Bayern's recent purchase of Renato Sanches for €35 million. They paid more than double for a player who scored 10 less goals in a weaker league.

I'm not saying Renato Sanches isn't a bright talent, just that BVB have done very well to get Dembélé at this price. We'll be looking at that €15 million as an absolute bargain in a couple years.

Here's to Ousmane continuing to embarrass defenders when the Bundesliga starts up in a few weeks time.