i actually love the premise of this, but can i ask you something? who is the protagonist, is it the mob boss, or the desperate man? if i were you i'd want that to be clearer, and its also a tad long. maybe try shortening. this is my version of yours:
When a calculating mob boss falls victim to a loss of 3 million dollars, he meets his match by a desperate young man determined to make a difference with his life by ensuring the dirty money serves a charitable cause.
But i actually love the idea of your film. very interesting. logline is almost there mate. just needs to be refined and tightened. good stuff!