If we sign a big name in attack, then the likes of Foden, Grealish, Mahrez, Alvarez will compete for one place next to Haaland and say Neymar.
We can make it work if we play Neymar on the left and Foden on the right, but then Grealish will be just a bit part player, which is quite unlikely to be in our plans for next season. The same holds if we sign Felix and play him on the right with Foden on the left.
I think our front 3 (in the more important games) will be Haaland, Foden (right) and Grealish (left). If Grealish fails to step up, then Foden (left) and Mahrez/Bernardo with Phillips next to Rodri if Bernardo is used on the right wing.