Let’s assume we are playing front 3. We have
Aubameyang
Lacazette
Pepe
Iwobi
Nketiah
Mkhitaryan
Nelson
7 into 3. To be fair, we should drop one of these guys. I assume Mkhitaryan is staying. If we are playing the big 3 together, I keep Nketiah. If we rotate strikers, I send him away.
The real worry is Nelson. If we play Aubameyang and Lacazette together, then Nelson should go, as he will be fighting for space with Iwobi.