What the Gunners need to do to get back to the Wenger days
Arsenal need a new defence
The Gunners have good forwards but they lack in the defensive department. Players like Sokratis Papastathopoulos, Mustafi and David Luiz all need to be sold in the up and coming transfer window.
Arteta needs to bring in quality defenders that can grow with the club and his ideology, as well as improve the team. Even if he brings in just two top defenders, this would help stabilise the team and bring some peace of mind to the forwards and remove some unwanted pressure.
A creative midfielder
This is a key position that needs to be filled ASAP. Coutinho is available in the market and Arsenal should make a move for a player of his quality.
He will bring flair and provide goals from the midfield, which the Gunners lack at the moment. If Arteta fails to use Özil or Ceballos, then it would be best to cut ties with them, sell Ozil and not bother to make Ceballos permanent. Free up some funds for someone more capable.
Ultimately, even though Arteta is young and lacks experience, he should be given some time to prove himself until December of 2021 and get some new players on board.
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If he can manage to replicate the tactics that Guardiola incorporates at Man City and it works, then Arsenal may once again be a force to be reckoned with.