The Monetary Authority of Singapore (MAS) is studying how it can further expand the range of eligible collateral allowed for debt financing. Associate Professor Annie Koh, associate dean, Lee Kong Chian School of Business, SMU, said: ?The pool of ?qualified' tier 2 assets that banks based in Singapore right now may not be as expansive as the ones in centres like London and New York but MAS is likely to widen the eligible collateral.?