Overview of Arsenal squad

Goalkeepers
Wojciech Szczęsny - keep
Łukasz Fabiański - maybe, if he can accept being the reserve goalkeeper to Szczesny
Vito Mannone - sell
Manuel Almunia - already gone

Right back
Bacary Sagna - keep
Carl Jenkinson - keep

Centre back
Thomas Vermalaen - keep
Laurent Koscielny - keep
Per Mertesacker - keep
Johan Djourou - maybe
Sébastien Squillaci - sell
Ignasi Miquel - send out on loan

Left back
Kieran Gibbs - keep
Andre Santos - keep

Central midfielders
Tomáš Rosický - keep
Mikel Arteta - keep
Aaron Ramsey - keep
Alex Song - keep
Jack Wilshere - keep
Abou Diaby - keep (we have got to give him a chance to recover from injury)
Emmanuel Frimpong - send out on loan
Francis Coquelin - send out on loan
Craig Eastmond - send out on loan
Nico Yennaris - send out on loan
Henri Lansbury - sell (let's face the fact, he's not going to get into the team with at least five players ahead of him)
Andrei Arshavin - sell (he wants to go since he is not being played in his preferred role)
Denilson - sell

Wingers
Theo Walcott - keep
Alex Oxlade-Chamberlain - keep
Gervinho - keep (give him one more season)

Forwards
Robin Van Persie - keep (as far as possible, even it means breaking the bank in terms of wages and signing new players)
Lukas Podolski - keep
Park Ju-Young - maybe (I would like to give him one more season to prove himself)
Marouane Chamakh - sell
Nicklas Bendtner - sell
Carlos Vela - sell
Ryo Miyaichi - send out on loan

What Arsenal need
Centre back x 1
Winger x 1
Forwards x 2
Defensive midfielder x 1