Because wenger knew it's not working they both strikers even Freddie said thatFor half a season Wenger had Auba and Lacazette. Wenger did not play them together. He played one of them with Mkhi and Iwobi on the wings. He knew that Auba and Laca together is not balanced. Arteta would do the same if he had that option. Instead our owners/board decided to add to our lack of balance by spending £72m on Pepe. No manager can get this front line working smoothly, not even Bielsa.