The details are about as murky right now as those trippy, drugged-out, hallucinogenic visions in Ang Lee’s Hulk movie, but apparently Edward Norton will not be playing Bruce Banner/the Hulk in The Avengers movie after playing the character in The Incredible Hulk back in 2008, although he we would like to be.
Norton wants to reprise his Hulk character — especially in with Joss Whedon directing and Robert Downey Jr. starring as Tony Stark/Iron Man — but inside sources report that Marvel has pushed him out of the way. The likely culprit? Economic reasons. The company has decided that they are going to cast "an unknown" to play Bruce Banner and The Hulk in the film. Source