The T20 Global League is scheduled to start on 3 November with the final slated for 16 December.
The PCB said their players will be needed for their National T20 Cup from 7 to 17 November and the board will not grant any No Objection Certificate’s (NGO’s) between those dates.
Eight Pakistan players, included centrally contracted ones like Wahab Riaz, Mohammad Nawaz, Fakhar Zaman and Yasir Shah were drafted by Global T20 franchises but they will now probably have to be replaced.
Another T20 league that will be affected is the Bangladesh Premier League (BPL), set to take place from 2 November to 10 December.
The PCB said in a statement “The PCB has decided that all the centrally contracted players, who are not facing any other restriction must also participate in PCB’s T20 tournament to strengthen our domestic cricket, as per international best practices.
“In order to facilitate our players and also keeping in view good relationship with Bangladesh and South Africa cricket boards, NOCs would be issued to all centrally contracted players to play BPL and Global T20 leagues, subject to the condition that they must play PCB’s T20 tournament from November 7 to 17, 2017.”