Probably because although he has all the tools to be a top CB, he has been blighted by inconsistency and mental mistakes, and could very much end up as Hooiveld mk2. He could also thrive in the change of scenery and achieve his potential to be excellent, but like Dan I am a little uneasy about how he's going to fare this season, although I wouldn't go as far as him to say I actively dislike the signing.
If he has the impact Hooiveld had when we brought him in I'll be delighted!