Pakistan coach Richard Pybus said on Saturday he would not be seeking a new deal with the Pakistan Cricket Board after the team's World Cup failure.
Pybus told Reuters by phone from East London: "I'm not down but it was incredibly frustrating. From a coaching point of view, I was not able to help improve the team's performance as I wanted to.
"My contract ran out at the end of the World Cup campaign and I'll now take some time to think things over."
Pakistan, the 1999 finalists and ranked among the main teams likely to challenge Australia, were knocked out of the first round of the tournament.
Pybus, born in England but based in South Africa where he made his name as a coach, has had several stints in charge of Pakistan.