Crispin Odey has struck a decidedly unimpressed tone on Greece's stance in its stand-off with creditors and international authorities.

In his latest letter to investors in the roughly €3 billion Odey European fund - published this week and covering performance for the month of May - the renowned hedge fund manager wrote: "By the time you are reading this, Greece may, against every likelihood, be outside of the euro and may be out of the European Union".