Because Sancho is a generational talent, he's not with us he'd be at a rival for the next 12 years. Its basically a Rooney 2004 situation all over again.
Re the title i still think the core of our team will still be that little bit too young, as shown this season there's still a bit to learn from them and the manager, I personally think going from what we're seeing this season to challenging Liverpool and City is too big a jump in one go.
However I don't disagree signs of progression will need to be shown, but that will be judged (atleast by me) based on what's being seen tactically rather than who is or isn't signed.