If we play a 3-5-2, three out of Greenwood, Rashford, Cavani and Sancho will always be on the bench. That's not good.
If we play 3-4-3, Bruno will be on the bench.
3 at the back just doesnt suit our squad no matter the mental gymnastics people do. I'm not saying play all of them, but a 4-3-3 accommodates Bruno, Rashford, Sancho and Ronaldo, with just Cavani and Greenwood on the bench, which is nice and balanced. Conte has to play a 4-3-3, otherwise he is wasting our attacking talent. And please dont say "but what about trophies and balance" because those are not mutually exclusive.