As a club we aren't ready to win the league. It takes time to implement the system. Time on the training pitch. Time to bed players in. Time for the manager to adapt to iron out issues. We have a better shot at winning the CL than the league. City with their squad, resources and Pep who is up there with the very best managers of all time have such a hold on this league that while yes, we can win it (now or if Kane comes), it's highly unrealistic this season anyway to jump 20 points. And 20 points likely won't even be enough. We outperformed our xPts by about 10 anyway, and making the jump from a top 4 team to a title challengers to actually winning it are all massive jumps. It's a year too soon to think about the title.
And in terms of system, Kane in and we are overly reliant on Rashford for any pace in behind still. He's not quite a perfect fit. And he drops back more and more, would that mesh with Bruno? He doesn't hold the line up front like what we want from our #9, he doesn't offer any threat in behind. That's not to say he isn't world class, but just that it isn't a perfect fit and his age and injury history are obvious causes for concern where a decline might not be far away, in addition to the age profile just being a bit too old where he might start declining by the time we're actually ready to properly challenge. At a price yeah, do it. At 100m, in our state, would be idiotic.