Spellman has signed a contract with Korean club Anyang KGC, Jung Ji-wook of JumpBall reports.
Spellman compiled 17 points (5-6 FG, 4-5 3Pt, 2-2 FT), four rebounds, one assist and one block over 22 minutes in Friday's 130-124 loss to Westchester.
Spellman totaled four points (1-10 FG, 0-5 3Pt, 1-1 FT), nine rebounds, four assists, two blocks and one steal over 24 minutes in Tuesday's 106-103 win over the Mad Ants.
Spellman posted eight points (4-9 FG, 0-4 3Pt), 10 rebounds and three steals over 29 minutes in Wednesday's 127-87 win over the G League Ignite.
Spellman logged 15 points (5-11 FG, 3-8 3Pt, 1-1 FT), five rebounds, two blocks and one assist over 26 minutes in Saturday's 115-108 loss to the Austin Spurs.
Spellman recorded 13 points (6-15 FG, 1-6 3Pt), six rebounds and three assists over 21 minutes in Friday's 138-126 win over Raptors 905.
Spellman will play in the G League bubble with the Erie Bayhawks, freelance journalist Adam Zagoria reports.
Spellman is expected to be waived, with the Knicks planning to sign veteran Taj Gibson, Ian Begley of SportsNet New York reports.
Spellman (knee) is active for Wednesday's game against Utah, Stefan Bondy of the New York Daily News reports.
Spellman (knee) is listed as probable for Wednesday's game against the Jazz.