We need both types of players. Zlatan and Rashford are not the same type of players and both will play different dependent on system too. I get what
@Fracture90 is saying.
You can have a system which benefits a striker who likes to hold up the ball and have runners off him which will suit Zlatan. If you then put Rashford into that, it doesnt work to his strengths.
Same as a system where you have a player going in behind like Rashford. A straight swap for Zlatan would see Zlatan struggle and thus the team struggle to be effective.
Today was a game that was designed to see Rashford use his strengths and it worked and he scored. But if we try the same system against a team that sits 10 men behind the ball, Rashford may become nullified and thats where Zlatan coming deep to draw defenders away can be useful for people to run off him.
I think Zlatan however will be more useful in the Europa League games (with Rashford as sub) and Rashford will be more useful in some of the tough remaining League games (with Zlatan as sub).
Although some games want to see them play together. About finding the balance for Jose.