Yes it is a little early to be talking about the team for next season, however rumours and speculations with incoming and outgoings should give us an idea on what the team may look like by mid August. I believe this is the season Arsene Wenger will take advantage of the transfer window and strengthen accordingly, and build a team that can challenge on all fronts.
I'm only going to mention first team players regardless of the comp they take part in.
OUTS
-Sagna
-Fabianski
-Bendtner ?
-Vermaelen ?
-Ryo ?

INS
-Aurier or Callum
-Xavi Martinez or Khedira
-Di maria
-Balotelli or Jackson Martinez
-Joel Campbell
-Julio Cesar

Starting Eleven
Szczesny

Aurier
Mertesacker
Koscielny
Gibbs

Xavi Martinez
Ramsey
Ozil

Walcott
Di Maria
Balotelli

back up- cesar, jenkinson, vermaelen, monreal, flamini, arteta, diaby, wilshere, ox, cazorla, rosicky, Campbell, podolski, giroud
this squad has depth and balance that could challenge on all fronts