it don't mean shit when ambromovich uses his own money/company money, clubs like manchester united use the club name as collateral to borrow money from banks (hence they have documented debts) it also helps when the deadwood get shifted out, malouda, benayoun for exp who are on high wages
I know he can play a striker role, but he is more of an inside forward, maybe chelsea bought him to bulk up the squad - 6 men for the front 3 (Hazard, Mata, Oscar, Moses, Schurrle, Marin) but thought they would wait until a Manager came in at least