The Queens imam who tipped off subway terror plotter Najibullah Zazi about investigators monitoring him was sentenced to time served but must leave the country within 90 days. Imam Ahmad Afzali, who had been working with the government, doesn't know where he'll go. When he pleaded guilty last month, he said, "I've just signed my death sentence. I grew up here. I barely speak my own language. I'm between a rock and a wall. Helping the government and here is what I get."