I don't see it as a matter of chemistry or being washed up. The reality is he's a four who'd ideally be paired with a stretch five, but the rotational fives on this team are both rim runners, so his best role on this team is small ball five. The problem is, they have more depth at the latter than the former.
I foresee limited minutes eventually leading to a mutual agreement whereby he's shutdown and away from the team while he awaits a trade (Celtics, Timberwolves, Suns, look like possibilities) or buyout.