"Mr. Younis Khan has requested a break from international cricket and hence will skip test series against New Zealand," the PCB said. "Mr. Yousuf has been named captain and (wicketkeeper) Kamran Akmal as his deputy."

After rejecting his resignation last month, the PCB appointed Younis as captain through the 2011 World Cup, provided he remains fit and in form.

Pakistan lost a limited-overs series to New Zealand 2-1 in Abu Dhabi, United Arab Emirates, on Monday, sparking criticism of Younis before the three-test series begins in New Zealand later this month.

Former test cricketers had questioned Younis' leadership qualities as Pakistan surprisingly left out Yousuf from the series decider against New Zealand in Abu Dhabi.

Younis himself could score only 0, 19 and 3 in the three innings as Pakistan batsmen struggled on placid wickets of Sheikh Zayed Stadium.

There were also reports of rift between Younis and some of the senior players soon after Pakistan lost in the semifinals of the Champions Trophy _ also against New Zealand _ last month.

Shahid Afridi, Younis' deputy in one-dayers, had said few players had problems with Younis and he had informed both PCB chairman Ijaz Butt and Younis about this.

Younis replaced Shoaib Malik as captain after Pakistan lost the one-day series against Sri Lanka at home earlier this year.

He responded with a triple century in his first test as regular Pakistan skipper in Karachi before the Sri Lankan team had to cut short its visit when gunmen attacked the team bus in Lahore on the third day of the second test on March 3.

Under Younis' leadership, Pakistan lost the one-day series against Australia in the United Arab Emirates and also lost both limited overs and test series in Sri Lanka.

However, Younis successfully led Pakistan to victory in the Twenty20 World Cup before he quit the shortest format of the game and Afridi was named captain for T20.

Former test skipper Inzamam-ul-Haq, who had also criticized Younis for the defeat against New Zealand, said it was PCB's good decision to make Yousuf the captain.

"If Younis feels he needs rest he should be given an opportunity," Inzamam told Express television.