11 team president options Knicks could target to replace Steve MillsMasai Ujiri, Donnie Nelson, and Sam Presti could be among the options2/5/2020, 5:52 PMJun 22, 2018; Dallas, TX, USA; Dallas Mavericks general manager Donnie Nelson answers questions during a press conference at the American Airlines Center. Mandatory Credit: Jerome Miron-USA TODAY Sports / Jerome Miron