From the 2club website:http://www.whufc.com/News/Articles/2015/September/3-September/Squad-List-confirmed
West Ham United have submitted their 25-man Squad List of Senior Players available for selection for Barclays Premier League fixtures until the opening of the January 2016 Transfer Window.
The Squad List* is as follows –
Adrian, Morgan Amalfitano, Michail Antonio, Andy Carroll, James Collins, Aaron Cresswell, Doneil Henry, Nikica Jelavic, Carl Jenkinson, Cheikhou Kouyate, Manuel Lanzini, Victor Moses, Mark Noble, Joey O’Brien, Pedro Obiang, Angelo Ogbonna, Dimitri Payet, Darren Randolph, Winston Reid, Diafra Sakho, Alex Song, Raphael Spiegel, James Tomkins, Enner Valencia, Mauro Zarate.
In addition to the 25 Senior Players, the Club has also named eight Under-21 players born on or after 1 January 1994, who are also available for selection – Josh Cullen, Stephen Hendrie, Sam Howes, Kyle Knoyle, Elliot Lee, Lewis Page, Martin Samuelsen and Reece Oxford.
*The 25-man Squad List includes eleven ‘Home Grown’ players who have, irrespective of his nationality or age, been registered with any club affiliated to the Football Association or the Football Association of Wales for a period, continuous or not, of three entire seasons or 36 months prior to his 21st birthday (or the end of the Season during which he turns 21).