I suspect Charles is a lot more astute than people give him credit for. When it comes to it,he will put the monarchy first, and he knows full well the damage Harry has attempted to inflict, and that he is not to be trusted. Charles will also know just how many of the claims are untrue, or twisted, much more than we will.
I suspect he’s very upset about what’s happened, very saddened. Saddened to be estranged from Harry and his grandkids. He will always leave a line of communication open to him. As a father, not as a monarch. He will also know the truth about Harry;s mental state. How it really works between him and Megan, and what’s caused this.
But that doesn’t mean he will have him back in any meaningful way ie undertaking royal duties. He would only do that if he truly believed Harry was not wanting to come back for financial gain, to boost the brand, to get more stories to sell. We saw that with the rejection of allowing them to come to sandringham for Xmas. It would have made everyone uncomfortable, on their guard, and would simply have been for financial gain for Harry and Megan. That’s why they try to bring their own photographers to private meetings, so they own the rights and can publish the pics. And it’s also why the palace doesn’t let them. They know full well what Harry and Megan are trying to do.
will Harry be back in Charles life time, I suspect so, as if the marriage ends, he will spend part of his time back in the uk . But like andrew does. As a family member, not a working royal.