Non-humourous attempt.
Stars: Neither Cesc nor Nasri will leave. Cesc because Barcelona no longer want him that desperately and therefore make a contemptuous approach, and Nasri because he signs a new contract.
Nasri's contract negotations will be somewhat protracted and frustrating, sowing the first seeds of a desire to move on.
Midfield: Denilson will be sold for the disappointing figure of 4m to a mid-table Spanish club. Rosicky and Diaby will stay. Lansbury will be promoted, become an instant fan favourite, then persistently underwhelm. Frimpong will be promoted by default, as if in reward for having spent a season out injured. Diaby will continue to be incorrectly used as cover for Song.
Defence: At the back, there will be no changes apart from Clichy's departure. A middling quality 28 year old left back will be signed to replace him and "compete" with Gibbs, but Wenger's real plan will be to make Gibbs first choice. Vermaelen will recover from his injury but suffer from niggling recurrences throughout 11-12.
Goalies: In goal, Almunia will leave. Wenger will recall Mannone, and somewhere along the line bring in a completely unknown 17 year old. Fabianski and Szczesny will both return and we'll never have to worry about Al again, but at some point Fabianski will deputise for Ches and cost us the match.
Forwards: Up front, Arshavin will make some controversial statement after we end the season empty-handed, seem as if he might leave, then stay because he's not really wanted anywhere better. He will look exhausted after the first fifteen minutes of the first filmed preseason match. Walcott will say something naive about how he's grown up, Chamakh will say something dutiful but unconvincing about responsibilities and improvement, and Van Persie will swear allegiance to Arsenal, leading us to toast his loyalty.
Bendtner will leave to a Champions League outsider with a parting shot about his unrecognised greatness. He will be replaced by the promotion from within of JET, who will blitz preseason but then look strangely lumbering and ineffectual in the Premier League, before going on a run of injuries and poor form which sees him permanently benched, occasionally fruitlessly used as an impact sub. Vela will remain a pointless peripheral figure for at least one more season - he won't even be fucked to leave.
Signings: Only one significant signing will be made. The player in question will be a technical small striker/winger/wide forward/whatever between 19 and 25, and sign for 15-20m. He will have incredible highlights reels but will be physically diminutive and will either have a suspect temperament, non-PL DNA, or be injury prone. He will win us several matches, frustrate the hell out of us and provide the topic for most arguments between August and December 2011. He will not be Eden Hazard.