Return to 4 at the back
I have never been a fan of 3 at the back.
It puts too much onus on the full backs, less to too much space in behind them and not enough cover in front.
To play 3 at the back you need your wide centre backs to be comfortable at full back.
Tottenham can do it as in Jan Vertonghen and Toby Alderweild, they have two central defenders who have previously played full back.
Arsenal need to return to 4 at the back.
Play Xhaka/Torreira in the middle
The axis of Granit Xhaka and Lucas Torreira is the best central midfield pairing in the Premier League.
The pair compliment each other. Both can defend, both can pass.
Torreira has allowed Xhaka to push further up the park, allowing him to be his aggressive self on the half way line. The Uruguayan also gives us that extra bit of protection when Xhaka miss reads a tackle or pass.
Both also have tremendous ability on the ball. Playing the pair gives the defence and goal keeper 2 options when playing out from the back. It is no surprise our passing is a lot better when both play.
Ultimately, the statistics speak for themselves:
Sign genuine width
Alex Iwobi is not good enough to play week in, week out. Henrikh Mkhitaryan and Pierre-Emerick Aubameyang are not natural wide men. Arsenal need to invest in a pair of wide forwards.
Playing 4 at the back, with Xhaka and Torreira in the middle, Arsenal have a stable base and centre. Add two wide men either side of a number 10 and the team is starting to take shape.
In the early part of the season, we were a threat in behind the opponents fulls backs. This was due to Iwobi and Aubameyang getting in behind – or making space for Bellerin and Monreal to get in behind.
With Iwobi and Mkhitaryan playing narrow, we lose all width and cover for the full backs.
Reiss Nelson returns in the summer. We need someone one the left hand side.
Decide his best striker
A tough decision needs to be made up top.
We have two top class strikers who broke our transfer record. Unai Emery needs to decide who his first choice is; and stick to it.
Do not panic
We have just lost our first game after going 22 unbeaten. We are in the race for 4th and progressing nicely in Europe.
Against Southampton we were a defensive mess. We were without our 3 first choice centre backs and started the game with a midfielder and a right back in central defence.
At the final whistle the only two defenders on the pitch have not started a league game for a combined 12 months.
There is not need to panic. No need to be rash in the transfer market.
Emery is here for the long term. Sanllehi and Mislintat have a long term vision. There is no need to rip that up just because we lost 1 game.