I think it's fine. As we all now know Mangala needs to be replaced ASAP and the legend Yaya - his time is up. As others have said, game time is crucial for B. Silva not only that he has to settle in Manchester as well. It takes people longer than we expect to slot in seamlessly. Next season we will see the best of him. And Gundogan if he stays clear of injury. Diaz looks absolutely ready for the first team, Foden maybe another year to mature and muscle up. The future is bright.