Niall Ferguson says the analogy of Brexit being an expensive divorce has played out, but that it now also feels like a student asking a professor for an extension on their paper.
He isn't particularly optimistic about the EU saying, "I don't think the future of the European Union is especially bright without Britain."
Ferguson, a senior fellow at Stanford's Hoover Institution, goes on to explain how the issues of immigration and the lack of a fiscal union are making the EU "sick".
Watch the video above to hear more from Niall Ferguson on Brexit and the European Union.