This collection of minimal football club logos created by Amer Amin is just awesome. I like nearly every approach. See all logos on Behance.
Arsenal F.C.
FC Spartak Moscow
Hannover 96
VFB Stuttgart
Wolverhampton Wanderers F. C.
ACF Fiorentina
Sampdoria
Valencia CF
Make sure to take a look at the whole project and his other works.