The pattern is clear here. When LB doesn't give you a chance, it could just be LB. But when you're on your 5th coach in a row who won't give you a chance as a 7' athelete with skills, then it has to be the attitude. Darko must be a total sulky malcontent behind close doors in practice and in the locker room. All of these coaches are coming to the conclusion that they'd rather have him riding the pine than on the floor, even if he might be better than their other options. It's a chemistry decision.