Flick´s experiments in the thrashing of Athletic

The return of Barça to Spotify Camp Nou had a lot of experimental elements across all lines. Hansi Flick lined up an unprecedented defense with Gerard Martín as left center-back, alongside Cubarsí. The full-backs were the usual ones, with Koundé on the right and Balde, once again on the left. 

Source: mundodeportivo.com