While Arsenal’s terrible season hasn’t exactly taught us anything new, it’s proven why certain problems needed to be addressed sooner.

Here’s what we’ve learned from Arsenal’s season.

7Premier League referees are terrible

LONDON, ENGLAND – OCTOBER 15: Referee Jonanthan Moss (L) shows Granit Xhaka of Arsenal (R) a red card during the Premier League match between Arsenal and Swansea City at Emirates Stadium on October 15, 2016 in London, England. (Photo by Mike Hewitt/Getty Images)

Handballs, penalties, no penalties, bizarre red cards, clear bias against Granit Xhaka… we’ve had everything these season.

The quality of Premier League referees appears to be at an all-time low.