Queta, 24, is 7-foot-0 and was waived by the Kings late last week, along with center Nerlens Noel.
Queta appeared in five games with the Kings last season, and 15 the year before that as a rookie. The modest guarantee on his contract ($250,000) would have doubled had he been on Sacramento’s opening night roster.
While there are no details on his deal with the Celtics, it’s likely an Exhibit 10 contract that could result in him playing for their G League franchise in Maine.
Queta was selected by the Kings with the No. 39 overall pick in the 2021 NBA Draft after playing three years at Utah State. He carries career averages of 2.9 points and 2.1 rebounds in 20 total games.