I have already been asked several times to make some kind of short guide that will help to choose players for different positions. The most significant choice factor is value of key attributes for each position. But surely these key attributes differ depending on position.

So you are welcomed to read my short FM2010 hints answering on question:

What 5 attributes are the most important for that or another pitch position?

Goalkeepers (GK)

Handling, Positioning, Reflexes, One on Ones, Aerial Ability

Wing Defenders (DRL)

Tackling, Teamwork, Pace, Marking, Decisions

Central Defenders (DC)

Tackling, Jumping, Strength, Marking, Concentration

Central Defensive Midfielders (DMC)

Tackling, Passing, Bravery, Determination, Work Rate

Central Midfielders (MC)

Tackling, Passing, Teamwork, Decisions, Determination

Flank Midfielders/Wingers (ML/MR/AML/AMR)

Passing, Crossing, Dribbling, Pace, Teamwork

Central Attacking Midfielders (DMC)

Passing, Creativity, Flair, Technique, First Touch

Quick Forwards (FC)

Finishing, Composure, Pace, Acceleration, Dribbling

Towering Forwards (FC)

Finishing, Composure, Strength, Jumping, Anticipation

It's my opinion and it may differ from yours, of course. But I am always glad to hear what you think about the topic of this post. 

True Football Manager