We needed a goalscorer but it's debatable whether Lukaku is actually the right fit for this team.
Last season we had a system that worked for the team and it was never just about one player. This season with Lukaku, if you listen to Tuchel, he is trying to make everything revolve around Lukaku in the system and hence, despite sitting top of the table right now, we have seen unconvincing attacking performances this past month. We'll see what happens in the coming weeks but based on what we have seen overall, the concerns people had about signing Lukaku are proving true. Also, the United fans over on Redcafe doesn't seem too surprised by what they have seen from Lukaku. They are like "yeah, he will score goals and probably bully small teams along the way but he'll get found out against better teams". We should know better than most about having a system that relies on an individual is not the most ideal of situations.