Ferguson (personal) managed zero points (0-3 FG, 0-3 3Pt), an assist and a block across 10 minutes in Friday's 110-100 victory over the Stockton Kings.
Ferguson was inactive for Saturday's loss to the Memphis Hustle due to personal reasons.
Ferguson signed a G League contract with the Rio Grande Vipers on Tuesday, NBA writer Marc Stein reports.
Ferguson agreed to a contract Monday with Greek club Lavrio B.C., Christos Tsaltas of SNDA.gr reports.
Ferguson was waived by the Knicks on Sunday.
The Knicks acquired Ferguson on Thursday as part of a three-team trade involving the 76ers and Thunder, Adrian Wojnarowski of ESPN reports. Philadelphia will receive George Hill (thumb) and Ignas Brazdeikis in the trade, while Oklahoma City will acquire Tony Bradley, Austin Rivers and 2025 and 2026 second-round picks.
Ferguson was active for Tuesday's 119-111 win over the Kings, but he didn't see the court in a coach's decision.
Ferguson (COVID-19 protocols) is no longer listed on the injury report ahead of Tuesday's game against Sacramento.
Ferguson (COVID-19 protocols) has been ruled out for Wednesday's game at Charlotte.
Ferguson is out Sunday against the Pacers due to health and safety protocols.