If I am not wrong, the issue is not financing. There are already many proposals eg soft loans from Japan and China, privatisation from the corporates like YTL, DRB, UEM etc.
It just need natural cycle time taking considerations of political and impacts of economic turmoils that is happening. Naturally Singapore would not want to support Malaysia until it outshine Singapore but at the same time it need to weigh the benefits it will get. Government machineries are all collective decisions. No one is going to be gung ho and sign the dotted line. There will be meetings after meetings and agreements decisions after decisions but the buck will continue to pass around. That is how Government work. And investors are killing themselves waiting for the officially official undisputed agreement.
I think it is the $ and other benefits i.e. who pays for what and who gets what.