Jimmy Fallon might seem like the consummate nice guy, but a story in the New York Post implies that may not actually be the case. Just before signing the deal to start hosting the Tonight Show in 2014, Fallon dumped his longtime manager, sources say. Fallon and Eric Kranzler had been working together, off and on, for a decade, and they were also "close friends," says a source. "[Eric] had really pushed his career." So what happened? "Eric felt Jimmy got really greedy." CAA ended up negotiating Fallon's Tonight deal. (In related news, pretty much all of the late night hosts riffed on Fallon replacing Leno last night; click to watch.)