I agree The team attack pattern will become different when a true striker join this team, still not convinced he will be huge difference maker. The opposite team will not even trying to attack at all, 10 men on the box all the time it will be not only a weaker team but also a top team playing like this against City.
Is Haaland is good enough facing this scenario against a well organised team with a a higher defense quality in the best league in the world in each every week? Like i said it's remain to be seen, we can only found out after he actually joining and start playing for us.