If we was tired, he should have quit in May.
He agreed to stay on board and then he drops out during pre-season because he was tired? He made a promise to the fans, he made a promise to the directors, and he broke it for a really lame reason.
Conte did a lot for us, and by all means if he isn't satisfied he should move on. But what he did was unreasonable and unprofessional and left us in an unnecessary bad situation. Simple as that.