Arsenal has submitted a 22-man squad to the Premier League in
accordance with new rules which came into force last season.
Top-flight clubs must register a squad of up to 25 players for
league games, which must include no more than 17 'non-
homegrown' players.
'Homegrown' players are defined as those who, irrespective of
nationality or age, have been affiliated to the FA or Welsh FA
for a period of three seasons or 36 months prior to their 21st
birthday. All others are registered on the
list of players under the age of 21.
These are Arsenal squad which they have submitted to the Premier League:

Homegrown players
1. Johan Djourou
2. Kieran Gibbs
3. Vito Mannone
4. Alex Song
5. Theo Walcott

Non-homegrown players

1. Manuel Almunia
2. Andrey Arshavin
3. Mikel Arteta
4. Yossi Benayoun
5. Marouane Chamakh
6. Abou Diaby
7. Lukasz Fabianski
8. Gervinho
9. Laurent Koscielny
10.Per Mertesacker
11.Chu Young Park
12.Tomas Rosicky
13.Bacary Sagna
14.Andre Santos
15.Sebastien Squillaci
16.Robin van Persie
17.Thomas Vermaelen
Per Mertesacker
11.Chu Young Park
12.Tomas Rosicky
13.Bacary Sagna
14.Andre Santos
15.Sebastien Squillaci
16.Robin van Persie
17.Thomas Vermaelen

That's great squad for Arsenal. What I will say is that Wenger should tighten up his club against more lost.