"Given the second wave all over the country, I think the extreme case scenario is something which one has to factor in. So,18-20 per cent NPL (non-performing loan) is not ruled out for public sector banks. "So, systemic risk is something which the government does not want to take upon its shoulder," he said, at a virtual conference organised by PHD Chamber. So, this kind of regular systemic risks could also be a trigger for the decision for privatisation of public sector banks taken by the government recently, apart from resources crunch, he said.