The opening three rounds of the season have certainly exposed plenty of deficiencies and no club can afford to leave the repair work until January.
Sportsmail takes a look at each of the 20 top-flight teams, who they need to keep their season on track and who they’re likely to get.
Contributions by Adrian Kajumba, Sami Mokbel, Jack Gaughan, Craig Hope and Dominic King.
What do they need?
Summer reinforcements so far have come largely in defence, with Willian the exception so far.
However, the Gunners remain in the market for a central midfielder, especially with Lucas Torreira and Matteo Guendouzi potentially on their way out of the club.
There’s optimism at Arsenal they will get someone in before the window shuts.
Who could they get?
It’s no secret that Atletico Madrid’s Thomas Partey and Lyon’s Houssem Aouar are Arsenal’s main targets in the midfield position.
Reports suggest Arsenal have all but given up on hopes of signing Partey and are concentrating on Aouar, whom Lyon value at £54m.