Doesn't Hockenheim only have a contract for next year and only because Miami couldn't be done and Merc is acting as sponsor? That might be one of the circuits that will have to go.
Contracts running out in
2019 Hockenheim, Spain, Italy, Mexico, Silverstone
2020 China, Azerbaijan, Brazil
2021 Belgium, Singapore, Japan, COTA
2022 France, Hungary
Bahrain has money
Monaco isn't going anywhere
Austria has Red Bull money
Abu Dhabi has money
None of the races outside Europe will get canned, the England GP might move to some shitty street circuit in London, Hockenheim will get replaced by Miami ... so Spain or Italy might have to make way for this ---....