Each Premier League club submits a squad list after each transfer window closes.
It can contain no more than 17 players who do not fulfil 'Home Grown Player' criteria. The remainder of the squad, up to a total of 25 players, must be home grown.
Changes to the squad list may be made during the period of a transfer window. Under-21 players are eligible, over and above the limit of 25 players. Each player is assigned a squad number, which they wear during Premier League matches.
Following the closure of the summer transfer window, the squad lists for August 2017 to December 2017 were announced on 1 September.