Well, I don’t know for sure ‘what will happen’, but I’ll just speculate…
I’d first like to point out that Kaneki / Haise never once hated the CCG no matter what the circumstances were. And that I don’t think Kaneki / Haise would hate Arima for what he did to him (ie penetrating him).
Plus we know that Haise has developed close ties with Arima and Akira during his 3 years with them, and deeply trusts them. He’s also aware that if he goes out of control Arima / CCG will deal with him, and he accepts that.
I don’t think Haise will stop thinking of Arima and Akira as his ‘parents’. He trusts them too much for that. Ties can’t be cut off so easily.
However, he might be compelled to leave the Qs / CCG because he might think he needs to meet his old friends or something. I don’t think he’ll take the squad with him because I doubt the squad will agree with that.
The CCG might see it as some sort of betrayal if he leaves to find his ghoul friends though.
(When this is probably going to be the climax of the story I can feel it)