Well we've got a squad of about 27 so let's not laugh at their plight too much.
1 England GK Jack Butland
2 Scotland DF Phil Bardsley
3 Netherlands DF Erik Pieters
4 Spain DF Marc Muniesa
5 Republic of Ireland MF Glenn Whelan (vice-captain)
6 Republic of Ireland MF Stephen Ireland
7 England DF Glen Johnson
8 Nigeria FW Peter Odemwingie
9 Austria FW Marko Arnautović
10 England MF Ollie Shenton
11 Spain FW Joselu
12 Republic of Ireland DF Marc Wilson
13 Denmark GK Jakob Haugaard
14 Netherlands MF Ibrahim Afellay
15 Netherlands MF Marco van Ginkel (on loan from Chelsea)
16 Scotland MF Charlie Adam
17 England DF Ryan Shawcross (captain)
18 Senegal FW Mame Biram Diouf
19 Republic of Ireland FW Jonathan Walters
20 United States DF Geoff Cameron
21 England MF Steve Sidwell
22 Switzerland MF Xherdan Shaqiri
23 Slovakia DF Dionatan Teixeira
24 Republic of Ireland GK Shay Given
25 England FW Peter Crouch
26 Germany DF Philipp Wollscheid
27 Spain FW Bojan Krkić
28 England DF Andy Wilkinson So according to Wiki we have 28.
Take away Wilko who's only here to get fit, Shenton who will be in the under 21 side. Tex will almost certainly be loaned out, and Ryan may not be named in the squad. That leaves 24.