Any good team (apart from Brazil in the 70s) starts from the back.
Walker is fast but makes mistake, but good enough at RB. Stones can play but not a top level defender not in best 2 centre halves at his club. Other 2 positions we are weaker, because the back 4 is weak you need 2 Defensive Midfield players or we get over run.
Up front you have Kane who is IMO a world class number 9 but plays deeper and deeper, still good but not as effective. Sterling is the worlds most frustrating footballer his record is hard to fault as Gonzo points out but if it comes to one crucial moment in a game I always think he will mis control the ball, take on an extra man and then run like a waddling duck. Foden looks brilliant in bits but never dominates a game. Grealish as Foden but does not look brilliant as often. Watching City he plays in very safe 99% of time.
I just do not think we are that good, add in a manager who is not inspiring it is a shit combination. Bellingham looks very good but if we need 2 DFMs whoever else is in there has a tough job.