Jeremy Siegel.Steve Marcus/Reuters Jeremy Siegel sees a rising risk of recession and a downbeat outlook for stocks. The retired Wharton finance professor expects the Fed to cut interest rates later this year. The US central bank may be underestimating the fallout from the banking fiasco, Siegel says. Don't be surprised if the US economy tanks, stocks tumble, and the Federal Reserve slashes interest rates later this year, Jeremy Siegel says."The risk of recession has increased clearly," the retired Wharton finance professor warned in his weekly commentary for WisdomTree, published on Monday.Siegel pointed to the Fed's "rather disturbing" projection last week that the US economy will grow only 0.4% this year.