If your Pakistan police clearance certificate just expired, you should get a new one, sometimes are needed to be even more recent depending on case officer requests. You do not need to wait until you get a request from immigration (the “depend request”)you can renew it in advance so your documents are up to date. For processing times, a police clearance from Pakistan can take a few weeks, but this depends on local authorities and processing queues. It is best to apply as early as possible to avoid delays in your visa process.