Mavericks exercise contract option on Willie Cauley-Stein

The Dallas Mavericks have picked up the second-season contract option for center Willie Cauley-Stein that is reportedly worth $4.1 million. Per the Dallas Morning News, “Cauley-Stein seemingly became more expendable Saturday when Dallas acquired promising 21-year-old center Moses Brown from Boston to complete the trade of Josh Richardson from the Mavericks to the Celtics. A …