The Giants released Martin on Wednesday, Adam Schefter of ESPN reports.
Martin appeared in just five regular-season contests in 2019 due to a knee injury, notching six tackles (three solo). His release frees up $4.8 million in 2020 cap space for the Giants while leaving $1.2 million in dead money. The 28-year-old will now look to latch on elsewhere in the league ahead of training camp.