At first glance, it might seem strange that a 35 year old shooting specialist who has been a role player for his entire career is such an important piece to making the Chicago machine run. The Bulls saw last year though that they are much worse on both ends without Dunleavy's presence.
Dunleavy's Contributions on the Court
Dunleavy missed 5 weeks last season with an ankle injury, and the Bulls went on a 9-10 slide during that span.
Dunleavy isn't a particularly great player, but he does a ton of little things well that usually go unnoticed.