I haven't a clue, like Viva said, why City fans keep pushing for a top class striker. You have three already, with Guidetti perennially hanging around never getting game time.
DDR, Moutinho possible but Gundogan is not possible.
Why you want a striker for? If I was a City fan I would want Nasri or Milner gone and replace them with Isco. Aguero/Dzeko/Tevez is plenty of goal scoring power. Your defence is fine but maybe a cheap replacement for Lescott but not a Hummels or Subotic as they will be bloody expensive and won't tolerate the bench.
Cos City fans think with their oil splattered penis, rather than their heads. They don't know what would benefit the team - they only care about what would get their freaky sheikhy mittens on a trophy.
Because Dzeko is going to leave and Tevez's contract is running down and he's expressed wishes to go back to Argentina. Balotelli not replaced.
So it's fair to think we need a striker.