Bangladesh board didn't follow protocol - PCB
The PCB has said the Bangladesh Cricket Board (BCB) and the organisers of the BPL had not followed the correct procedures with regards to signing Pakistan players
ICC regulations on domestic cricket events
Clause 32A.4 reads: "Each Member shall ensure, to the greatest extent permitted by applicable law (as determined in the reasonable opinion of the Member), that no foreign player participates in any domestic cricket event under the jurisdiction of the Member unless such foreign player holds a valid no-objection certificate from the relevant Member.
And for the avoidance of any doubt, the relevant Member is the only body capable of granting a no-objection certificate for a foreign player. Accordingly, all such applications must be made directly to the relevant Member and not to any other third party."
Umar Farooq is ESPNcricinfo's Pakistan correspondent