Lessons learnt as Arsenal slip to another defeat at The Emirates
Mikel Arteta ponders after yet another home defeat for Arsenal  Image: Getty mages/ Julian Finney

Arsenal ended their eight hour streak without scoring from open play but that failed to stop them from sinking to a third successive home defeat against Wolverhampton Wanderers in a game overshadowed by a serious head injury to Raul Jimenez.

The Mexican striker was stretchered off the pitch following a sickening clash of heads with Arsenal centre-half David Luiz, yet goals from Daniel Podence and Pedro Neto ensured that the Midlands outfit took all three points regardless.

The defeat means that this is Arsenal's worst start to a premier league season, picking up just 13 points from a possible 30, and leaves the Gunners sat in 14th place after ten games. But what did the game teach us about Mikel Arteta's side.

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Arsenal keep getting caught in transition:

If it had not been clear already, Sunday's defeat made further evident Arsenal's need for more dynamic midfielders. Far too often, the deep lying pair of Granit Xhaka and Dani Ceballos were simply bypassed as Wolves sprung from deep in their own half, on occasion by a single pass.

Equally, they offered little going forward either, with neither player looking to pierce the lines of a packed centre of the pitch. The addition of Thomas Partey on deadline day will be invaluable to the Gunners, yet beyond him it is difficult to see what Arteta's current midfield options offer him in either direction, despite their tidiness on the ball.

This is not simply a one off either. It is no coincidence that the better performances under Arteta have come when Arsenal sit deep to spring the counter attack. Against Aston Villa, Leicester City and now Wolves, the Gunners been caught in transitions and have paid the price by conceding goals. Clearly, something needs to change in Arsenal's engine room.

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The Premier League needs concussion substitutions:

Although the Premier League have until now voted down the idea of five substitutes, despite pleas from Liverpool boss Jurgen Klopp, the case for concussion substitutes is growing. Following the heavy collision between Raul Jimenez and David Luiz, Wolves were forced to use one of their three substitutions whilst Arsenal opted to keep David Luiz on the pitch.

The Brazilian defender looked lost at times in the first half, to which the head injury may have contributed. Concussion substitutions have already made their way into other sports, notably rugby, and it seems only a matter of time before football follows suit, especially if incidents such as today's continue to occur.

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Arsenal need to trust the youth:

In the wake of Nicolas Pepe's red card, Willian was once again recalled into the starting eleven, leaving many fans frustrated. It had been hoped that Reiss Nelson's good performances in the Europa League had earnt him a position in the league side, yet experience was preferred.

Whilst Willian provided the assist for Gabriel's goal, it was another sub-par performance for the veteran winger. Nelson, who replaced him in the second half, looked far brighter and will certainly have given Arteta food for thought.

With the side in their current predicament, the likes of William Saliba, Emile Smith-Rowe and Folarin Balogun cannot be too far away from being handed their first league minutes under Arteta. Smith-Rowe in particular fills a much needed creative hole in Arsenal's side at the moment, and looks the most likely to step into the Mesut Ozil shaped void in the middle of the pitch.

Looking ahead:

It is likely that things will get worse for the Gunners in the Premier League before they get any better, as they travel across North London to face high-flying Tottenham Hotspur in the North London Derby. Before that, they host Rapid Wien in the UEFA Europa League.

With qualification already assured, it is possible that significant squad rotation could occur, which could see the likes of Miguel Azeez and Folarin Balogun handed their first starts. Beyond that, however, Arsenal's league form needs to begin to pick up fast, and pick up soon.