#4: Marvin Bagley III
Marvin Bagley III has been up and down this season and still hasn't shown he can play defense. The problem with him is that he is not an expiring deal and is still owed $12.5 million next season, a hefty sum for a one-dimensional backup center. If the Pistons can find any expiring contract for him they should jump on it, as they need to upgrade the center position with guys who can protect the rim or shoot. They need to hope there is a team desperate for center help, but I wouldn't hold my breath.
#3: Alec Burks
Alec Burks is on an expiring deal and is definitely a player who could help a contender that needed more shooting off the bench. Burks can still do that and has looked better in the last couple of games, so the Pistons will likely get calls on him soon. I wouldn't expect a big return for Burks, as he's not going to fetch a first-round pick or a high-ceiling young player. He's another guy whose contract could be used in a bigger deal.