Kelley is not in the starting lineup for Tuesday's game against the 76ers, Grant Afseth of DallasHoopsJournal.com reports.
Kelley will start Sunday's game against the Cavaliers, Mavericks radio play-by-play broadcaster Chuck Cooperstein reports.
The Lakers waived Kelley on Friday.
Kelley agreed to an Exhibit 10 deal with the Lakers on Wednesday, Jovan Buha of The Athletic reports.
The Celtics waived Kelley on Thursday, Keith Smith of Spotrac.com reports.
Kelley has agreed to an Exhibit 10 contract with the Spurs, Jeff Garcia of Spurs Zone reports.