I don't know too much about this except that Pierce Brosnan was asked who he thought would make a decent Bond and he said Colin Farrel, but when asked Colin said he would be interested in something like that
Please not Clive Owen. He may be good-looking and all that, but his delivery is always incredibly flat, unless they pick out his worst lines in the films of his I have seen trailers/excerpts of. (Have to confess that I've never seen anything with him in, as his acting in the trailers have always put me off).