Football manager tips: Choosing a good defender

When you're playing a game, precisely football manager game with version 2011 or 2011, whatever team you use, your team should have 3 strengths, namely defense, and attack midfilder.
Football manager tips: Choosing a good defender who this time is how do I choose a good defender?
Usually the thing that happened was the defender who is less accurate, less cautious and less discipline can lead to brittle defense, or even owngoal.
To fix the player needed to survive according to the following criteria:
In terms of Physical Attributes
Select the player with the attributes:
- Balance
- Naturan fitness
- Stamina
- Strength
- Agility
In terms of mental attributes
The defender has an mental must include the following:
- Aggression
- Anticipation
- Bravery
- Concentration
- Determination
- Positioning
- Workrate
In terms of technical attributes
Players endure physical and mental addition, he also must have the technical, as follows:
- Marking
- Tackling
- Heading
Thus the criteria of a good defender in the game football manager 2010 or 2011