Well yes you have a point. At the moment we can only play that formation and it is why we shall see what FB we get.
CB I think Andreas might get a chance. Don't know if we will buy a CB. We shall see.
Conte don't want the 3-5-2. Read what he wanted to do originally when he came to Chelsea.
I supposed that is still his plan, but yeah if we can't 3-5-2 might be the only option next season.
Unless we get the personal to play the 4-2-4 as Conte wanted and this summer window might let us know that.