Arsenal don't need anyone to make things worse for them. Despite them starting the year well, Arteta hasn't been able to do so this season.
The Gunners conceded first against Everton, but levelled from the penalty spot. However, Yerry Mina made it 2-1 before the break.
The Colombian made it even more difficult for the Londoners with a good front post header. Sigurdsson put a good ball in and Mina sent it in the back of the net with Leno getting a glove to it.
It is the Colombian's second goal of the season, after the goal (also in the 45th minute) against Brighton on 3rd October.