I think all three have had long enough to show they can finish, which is what their expectations are. I think Werner and Pulisic can still improve, but it may need to happen somewhere else as there just seems to be lacking chemistry here. I honestly loved Ziyech at Ajax, but I don't think he has what it takes to play in the PL. I will pay attention to Pulisic when he goes to his next team, like I do for all the top USMNT players, but I doubt I watch many full games. Pulisic has regressed since his play after the restart. He might need a new team to find his way back to being aggressive and directly finishing.