Yeah you're missing a goalscorer. Jesus isn't good enough.
I actually think they are set with Havertz as the false 9. He has been a game changer for them since the change in January. Presses effectively from the front, immaculate first touch and link-up play is elite. He knits their attack perfectly. The best comparison to a Firmino you will see.
Sums up how lazy our recruitment had gotten that we didn't see his performances as a false 9 for Leverkusen, and sign him up as a long term replacement for Firmino.
If I was Arteta, I would be looking for the elite attacker down the left rather than in the 9 position. They need to find a Salah/Mane from the left who will chip in with 15+ league goals.