Economist who called 2008 crisis says more bank collapses are coming

• More bank failures are coming, according to top economist Raghuram Rajan.
• Rajan, who called the 2008 crisis, warned of more volatility stemming from the Fed's rate hikes.
• Central bankers have hiked rates aggressively to control inflation, sowing chaos in markets over the past year.

Despite waning volatility in recent weeks, banking sector woes aren't over, and more collapses could be coming, according to top economist Raghuram Rajan.