Vander Blue worked out at the Verizon Center on Monday in the hopes of earning an invite to Wizards' training camp.
Celtics will assign G Vander Blue to the Maine Red Claws.
Vander Blue played four minutes and scored two points in his Celtic debut on Wednesday.
Celtics sign SG Vander Blue.
The Celtics are expected to sign G Vander Blue out of the D-League in time for Wednesday's game against the Wizards.
Vander Blue, who went undrafted out of Marquette, has signed with the Israeli team Maccabi Rishon LeZion.
Vander Blue, Khalif Wyatt and Mac Koshwal were waived by the Sixers.
The Sixers signed Vander Blue to a partially-guaranteed deal on Thursday.
Vander Blue will reportedly play for the Grizzlies during summer league.