well he might be selfish or even an idiot but he is a great player look how he settled quickly in celta vigo scoring alot of goals.and i am sure he will do great with marsielle.
In fact Sonck is not better than Mido both are good but mido is younger than sonk with 4 whole years.which gives him the edge to develop into a star player.as i said before it will be a huge loss for Ajax.