I always thought of all the Dutch players that Real were going to seel that Robben was the one they should keep - he's a genuine left winger and is world class , not too many of them in the world. Great signing for us but a loss for Real Madrid, they probably should have keept Robben for Alonso.
Sneijder is a quality player but Real have him covered so I wouldn't be too concerned of his sale.
Drenthe should go on loan to a lower team, he is a good player but from what I read the guy is quick to take on bad criticism so he need to go and find form and confidence somewhere else then come back.