The auction lets you find a balanced player. The position is one part, the quality is one, the skill set is one, the age is one and the specialization is another. You will want a good quality player that fills the position with a specialty like free kicker. If he is young then you will want an old backup that is cheap and more balanced. If the principle is old, then you will want a young one that you can train like crazy! You can pick up old free agents as backups at any time so you should have one slot free or be ready to cut someone or sell a backup that is appealing. Can't sell someone who is just another old player.