With its granaries brimming over, the government faces a crippling dilemma: The tab for releasing foodgrain to make way for new arrivals adds up to Rs 20,000-25,000 crore, an unviable addition to the subsidy bill. The government's bind was succinctly outlined by finance minister Pranab Mukherjee when he told a meeting called by Prime Minister Manmohan Singh on Wednesday that vacating food silos will mean a hefty cost at a time when battling deficits is priority.