Viktor Gyokeres feels the full force of Mikel Arteta's ruthless streak, Christos Tzolis gets a rude awakening - and the psychological battle facing Arsenal's opponents: THINGS WE LEARNED as the Gunners beat Aston Villa

ISAAN KHAN: Mikel Arteta's ruthlessness is well-documented. Just ask Aaron Ramsdale or, most recently, Gabriel Martinelli, the pair having been moved on after losing their starting spots.