Google translated:

Brede Hangeland played during Warnocks spell at Crystal Palace from August 2014 until he was fired around Christmas. He thought of Warnock to be a nice guy who was well-liked by many players because of his good man-management skills.

However, Hangeland could control his enthusiasm.

"For me, however, the tactical arrangement, or the lack of arrangements, was way too simple - or absent. Warnock had very little to present in game plans, and It was more of the type "go out and run". I definitely think it's not enough in the Premier League.

In addition, I did not liked that he often talked on the phone during training without looking at the workouts. How do you get to know how the players perform or get a game plan going when you do not watch the training? says Hangeland to TV 2.