How do you get the chemistry and morale of your players up on nba 2k9 for X box?

BT: How do you get the chemistry and morale of your players up on nba 2k9 for X box?
Everyone is happy with their playing time and role but are most of them are (-1) on their overall rating. And usually my team chemistry isn’t that good. Also any good trades or ways to get more money?

Answers and Views:

Answer by JC45 (Celtics)
I only play my starters all game.