For what it's worth, I agree with you and I really would be concerned (based on what we"re seeing right now) if we are involved in any genuine transfer talks regarding Kane.
And for what it's worth (2), based on the three performances so far, I'd leave Kane out of the England starting XI and have a front three of Sterling, Foden and Saka playing a fluid, false 9 system in front of Grealish and Mount. Sitting in behind would be Rice or Phillips with the back four that started last night.
Kane is the problem with that team right now, given his static play and lack of confidence. His performances do not merit his inclusion.
But I don't see Southgate having the cojones to leave him out, just like many an England manager at tournaments down the years with the 'media star man' of the time (eg Greenwood with the injured Keegan in '82, Robson with Wilkins/Robson in 86 and so on and so on ever since..)
But then, 'what the George Kinnell' do I know about footy..?