Back in March, ESPN FC's club bloggers and correspondents selected their side's most important players for the season ahead.
Now, with the transfer window over, each club has a revised list of key performers. Who is in, who is out and who has flopped? Click on each club for a detailed rundown of the key men and those who have fallen by the wayside.
CHELSEA: It may be some time before we see Tiemoue Bakayoko in full flow and Cesc Fabregas is defensively limited, meaning N'Golo Kante's energy and intelligence will be crucial. -- Liam Twomey
TOTTENHAM: Harry Kane remains Tottenham's talisman and the best striker in the Premier League but is Christian Eriksen now more important than Dele Alli?-- Dan Kilpatrick
LIVERPOOL: Sadio Mane is becoming Liverpool's main man and is impossible to defend at times and, transfer request aside, Philippe Coutinho is still a crucial component to this team. -- Glenn Price
MANCHESTER CITY: Pep Guardiola wants goals more than anything, and nobody is better at getting them for City than Sergio Aguero, despite the arrival of Gabriel Jesus. -- Jonathan Smith
ARSENAL: The Gunners have not had a good start to the season, and not a great transfer window either. But at least they kept hold off their star player: Alexis Sanchez. -- Mattias Karen
MANCHESTER UNITED: Manchester United manager Jose Mourinho has brought in three new players, and two of them are key. But what of Zlatan Ibrahimovic? -- Rob Dawson
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