Kane's strike has been a pretty big revelation imo.
And it can safely be said to be a strike. If it was a misunderstanding of his expected return date, or any other innocuous reason, either party or both would have come out with an explanation or denial of the assumptions by now. Other than the vague 'harry feels it has been blown out of proportion' and the 'he's self isolating, there has been nothing to try calm it. Nuno now referring to it as 'an internal matter', he'd certainly have used the chance to stop it in its tracks if it wasn't that.
While I don't like seeing players do it, it does take a lot of determination, for him particularly, to prove a point. Still a long way to go, but can't see this not getting done now.