Celtic Park should be louder than first feared tonight, but it still may not be full. That decision prompted a modest uptick in sales, but there remains healthy availability for the Europa League tie with Braga. A switched-on Celtic Park does matter in Europe and the manager has repeatedly said so. Whether it fills every seat remains to be seen, yet there is enough availability for a final rush if supporters can make the time. And in a less than traditional turn, Celtic are still applying discounts to season ticket holders who have yet to buy a ticket.