Assume they wanted to keep him for T20 and have written ODI off. The fact it’s only club tournament is played with 2nd and 3rd string sides during the month of the 100 shows how much they care about it.
ODI World Cup is also next year, so perhaps he goes after that. Deffo needed a change at test level mind also surprised he oversaw it considering how separated they have made it from the test cricket which in a test series finishes and 3 days later it’s T20.
