Daye committed to training camp with the Cavaliers, and the 6-foot-11 forward is expected to compete for a potential regular-season roster spot.
Daye played 34 games last season with the San Antonio Spurs and Atlanta Hawks, averaging 3.8 points, 2.2 rebounds and 10.1 minutes. The Hawks waived him in July. Daye, 27, was part of the Spurs' 2014 championship team.
Daye, the 15th overall pick to Detroit in the 2009 draft out of Gonzaga, has spent six seasons in the NBA with the Pistons, Memphis, San Antonio, Toronto and Atlanta.