Elizabeth Debicki has confirmed basically nothing about TNM2. I'm glad that TH has a gig, and yet I am no longer interested in Roper and Pine squaring off again. And Pine seemed kind of ambivalent about Jed at the end of the series, unlike at the end of the end. The book has been adapted and it has no sequel. There is no more night to manage. Think like Elsa in Frozen, and Let It Go. Or make Olivia Coleman the lead maybe, and start over...Hmm...Like a LeCarre novel meets Fargo, and Olivia has a hot affair with her sexy ex-lover in the CIA! I've solved it!
http://www.radiotimes.com/news/tv/2018-03-16/elizabeth-debicki-confirms-work-on-the-night-manager-sequel-im-sworn-to-secrecy/