Pakistan Tehreek-e-Insaf Chairman Imran Khan on Thursday said the new prime minister will prove himself to be another servant of Asif Ali Zardari. While speaking to media persons at Karachi airport, Imran Khan termed the disqualification of former Prime Minister Yusuf Raza Gilani as a historic judgment of the Supreme Court. "The entire nation should celebrate Gilani's punishment," he said, maintaining Pakistan now needed a new system. He said the new prime minister would be another servant of Asif Zardari and, like the previous one, he would also not write to the Swiss authorities for bringing back Zardari's Rs6 billion. Imran Khan said his party would stage a demonstration against price hike and loadshedding in Faisalabad on June 27.