For a formation of 4-2-3-1 that Jose plays, having 4 strikers is ludicrous. 3 is more than enough. At Real Madrid (2012-2013, season) they had Benzema, Huginiun and Morata. They did have Jese and Ronaldo but they are more wingers that cut inside (Hazard and Schurrle).
Jose will only buy a striker if Torres leaves, if he doesn't he can't justify spending an extra 20 million on a striker to become a bench warmer.
In comparison to City who have Jovetic, Dzeko, Aguero and Negredo. They usually play a 4-4-2 or a 4-4-1-1 where Aguero acts as the CAM pushing higher up (when fit). The two managers have different strategies and tactics thus comparing the attacking options of city to that of Chelsea won’t give you a fair assessment.
Jose is reliant on his midfield and that is why (I would say) we have the best midfield in the league. I'd even say Arsenals midfield is better than that of city!
Wait till the end of the window before panicking.