Even if you ignore the three wide options you mention Sanchez, Ox, Walcott, Podolski, Campbell and Gnabry are/were more than adequate options for the wide positions, three of those have a proven record of getting into double figures too.
We don't need more players in the front three positions, any players brought in need to be top class, i.e. another Sanchez quality player. Otherwise there's no point.
