It’s taken Unai Emery months of hard-work to lay his foundations into making Arsenal a much more attractive, positive football club in his tenure.

So, to see his good work being undone by unnecessary individual errors can be especially frustrating for the Spaniard.

So whenever Shkodran Mustafi ruins Arsenal’s plans with a mistake, it’s Emery who is undoubtedly hurt the most. The error-prone German defender was back to his worst on Sunday, ending the Gunners’ unbeaten home streak with another embarrassing performance against Crystal Palace.

Coming up against possibly the most out-of-form Premier League striker in Christian Benteke, Mustafi ended up getting bullied. He was out of position multiple times, harried with his challenges and unsure of what to do. The German allowed the towering Palace striker to waltz beyond him for the opener before making a schoolboy error for the second.

Just when Arsenal were clawing back into the game after equalizing, he sloppily allowed Zaha to slide past him to score against the helpless Bernd Leno. This isn’t the first time he’s made mistakes which have cost Arsenal points. The German’s done it time and again this season, ruining their momentum and piling on the misery on Emery.

Considering he’s reportedly paid £90k (via SportRac), it simply isn’t good enough.

At this point, even Kostas Mavropanos seems a more reliable option than him. While signing a strong centre-half must be made a priority in the summer, Emery needs to deal with his Mustafi issue immediately.

However, if he keeps on persisting with the erroneous defender, the witty Spaniard’s risking destroying everything he’s built so far at Arsenal.

Arsenal fans, do you think Mustafi should be replaced soon? Join the discussion by commenting below…