I'm generally staying off the hype train in this. Mostly because I've only seen him play against us once in the CL and once in a preseason, but I also think there is something in Wolands point above. Many attacking imports from the Bundesliga have been underwhelming and have not met the hype. Sancho, Havertz, Werner, Pulisic, Haller, Marin, Podolski, Bailey, etc, etc. Every time I see highlights from the league I'm amazed at the amount of space given to attackers and the game has a basketball feel to it. If he is going to be a success here then a year of 'transition' is the very least I'll be expecting.
He does appear to have the skills and qualities that will translate, so fingers crossed he can deliver and join the likes of Son, Haaland and KDB in making the PL their playground.
In the mean time, being better than Henderson and Elliott shouldn't be too much of an ask.