The board had previously been wary of its fast bowlers playing county cricket with Umar Gul and Rao Iftikhar having been refused permission to play in England.
"Shoaib's case is a bit different," said PCB chief operating officer Shaqfqat Naghmi.
"He has been out of competitive cricket for quite some time and needs to regain his match fitness. We believe a short county stint might help him in doing that."
"If I can manage to help them win some games it will be such a good thing."
Shoaib has previously played for Somerset, Worcestershire and Durham.
In a chequered career, Shoaib has played 46 Tests and 138 one-day matches for Pakistan, and also had spells with Somerset, Worcestershire and Durham.
This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.
Bookmark with:
What are these?