As I've said before, I think with the right coaching Babel could be a very, very useful player.
Wouldn't be upset at all with Drenthe, high energy full-back with a great delivery who looks capable of getting up and down the field all day, though there are obvious concerns about him defensively. Another player who could potentially do well.
Ritgers of what I saw today wouldn't be particularly worth getting, though it's the only time I've seen him to be fair to the lad.