I think in the original article regarding the retained list the club specified that they had indeed exercised the option in Kaz's contract. I agree with what you say about him though, those moments when he just stops with the ball and waits for the opposition to assemble in the box are so...
In the Argus today:
"...the squad eventually assembled by Hyypia is likely to have a younger, fresher look to it. It will not be wholesale. The likes of Captain Gordon Greer, Bruno, Inigo Calderon...are still around".
I take it to mean they'll be staying. As for Ankergren I have no idea.