I'm not sure it's that simple. What if our play is geared to Zlatan and thus benefits only his numbers but hampers the other players because of lacking variety and dynamism?
Imagine for a moment that we didn't sign Zlatan and played all season without him. Do people believe that we would have scored less goals than Bournemouth and WBrom? Seriously? That would mean that Jose is well past it and doesn't know how to get the best out of an excellent group of players (Pogba, Mhki, Martial, Rashford, Mata).