Based on that alone I never see Kimi back in McLaren. Red Bull yes, but McLaren? Big no I'd say. Been there, done that is what I'd say about Kimi-McLaren partnership.
He may have doubts about how well Lotus/Renault can do next year, and there may not be a Red Bull offer. I think he would probably go with Red Bull if available, but they might choose to have one of the Toro Rosso drivers partner Seb.