Right now, Havertz has been thriving as that hybrid forward/false 9, linking midfield to attack, making those late, ghost-like runs into the box. But Gyökeres is an out-and-out No. 9 physically dominant, clinical, and the kind who demands to be the focal point. That means:
Less time as a central striker for Kai unless Arteta rotates or shifts formations.
More responsibility as a second striker or advanced midfielder Kai might play off Viktor’s shoulder, feeding him chances while arriving late for cutbacks.
Increased competition for minutes especially in big games, where Arteta might prefer a true striker.
On the flip side, Gyökeres could unlock Havertz.
With a striker who can occupy both centre-backs, Kai would have more freedom to find pockets of space, drift wide, or arrive unmarked in the box a setup that suits his timing and technique perfectly.
So, it’s less “Kai is in trouble” and more “Kai might have to adapt.” If he does, we could see the best version of him yet.