5 defenders Knicks should consider pursuing in 2020 NBA free agencyKnicks look to return to defensive force they were in the '90s11/18/2020, 8:24 PMDavid VertsbergerNBA freelance writerDec 3, 2018; Toronto, Ontario, CAN; Denver Nuggets forward Paul Millsap (4) dribbles against Toronto Raptors forward Serge Ibaka (9) in the second quarter at Scotiabank Arena. / © Tom Szczerbowski-USA TODAY SportsOct 10, 2017; Toronto, Ontario, CAN; Toronto Raptors guard Fred VanVleet (23) plays defense against Detroit Pistons point guard Reggie Jackson (1) at Air Canada Centre. The Raptors beat the Pistons 116-94. Mandatory Credit: Tom Szczerbowski-USA TODAY Sports / © Tom Szczerbowski-USA TODAY Sports