i use 4-5-1..now top in the league..only defeat against stoke n man city coz all player less fitness
keeper-szczesny
central def left - vermaelen
central def right - koscielny
fullbacks left - gibbs
fullbacks right - sagna
defensive midfield(set anchorman) - i buy de rossi
central mid left(set deep lying playmaker) - aaron ramsey
central mid right(set advance playmaker) - wilshere
right wings(set inside forward) - theo walcott
left wings(set inside forward) - cazorla
striker( set poacher) - podolski
sub:giroud,santos,arteta,chamberlain,mertesacker,gervinho,jenkinson.djorou,fabianski,diaby,frimpong,
i sell chamakh,squillaci,arshavin,rosicky
u can try this tactic for arsenal...try to get de rossi or another good dm like fellaini,sven bender
set ur team training TEAMWORK for 2 month and u can see ur result...reply me ok