Calling Randle selfish is like saying Robert Rose was.
A lot of people thought that Rose was selfish, though most overlooked it because he was so good. But he really wasn't and it wasn't unusual to see his stat line read that along with his usual 25+ points and whatever rebounds, he would give out somewhere near 10 assists.
As Brett Maher said about him, the problem was that because he could just about do it all, those around him tended to sit back a bit and let him do everything.
Randle isn't selfish, but like Rose when you are that much better than those around you then you are going to end up with the ball a lot more. And given that he's the point guard, of course he is going to have it more than most.
Personally I would rather Adelaide keep him, especially if they are getting away with it for only around $300k a season. He's a proven NBL performer. Besides that, its nice to have a regular import rather than the one year wonders we've had here in the past 6-7 years.