Arsenal are largely expected to splash the cash on a defender and/or goalkeeper in the summer, but perhaps the long-needed managerial change will be the answer to the problems at the back instead.

2Lessons from Debuchy

Saint-Etienne's French defender Mathieu Debuchy celebrates after scoring a goal during the French L1 football match between Lyon (OL) and Saint-Etienne (ASSE) on February 25, 2018, at the Groupama stadium in Decines-Charpieu near Lyon, central-eastern France. / AFP PHOTO / ROMAIN LAFABREGUE
Saint-Etienne’s French defender Mathieu Debuchy celebrates after scoring a goal during the French L1 football match between Lyon (OL) and Saint-Etienne (ASSE) on February 25, 2018, at the Groupama stadium in Decines-Charpieu near Lyon, central-eastern France. / AFP PHOTO / ROMAIN LAFABREGUE

Since leaving Arsenal for Saint-Etienne in January, Mathieu Debuchy has been on fire.

He already has four goals to his name in Ligue 1.

Since joining, they have given up only 8 goals in 11 games, including dragging out a 1-1 draw against French super club Paris Saint Germain.

The fact that Arsenal had a right back that was capable of this on the books and failed to utilise it shows that Arsene Wenger and his coaching staff have lost their touch when it comes to the defensive side of the game.

Being fit and healthy has also played a role in his improvement.

If Mathieu Debuchy can benefit so much from being used in a different way, how many other Arsenal defenders could flourish under a new manager?

With better instruction, Mustafi could turn into the promising World Cup winning defender that Arsenal thought they were buying two seasons ago.

The same goes for Chambers, Bellerin, Holding, and the rest.

All of them have promise, and under the right guiding hand, perhaps they could all do a Debuchy.

Next, the defensive record of potential managers and how they can get the best out of the players Arsenal already have…