Stevens, 26, is in his first season with Boston and three years with the Cavaliers. He appeared in 62 games last season, averaging 5.3 points and 3.3 rebounds.
Exhibit 9 contracts are usually given to players for training camp and who aren’t expected to make the team. But they come with partial guarantees if the player does make the cut — and generally small raises if the player is still with the club a month or so into the season.
Sumner, 27, appeared in 53 games with the Nets last season, while Arcidiacono, 29, has played with the Knicks on a couple of occasions, and has spent time with the Bulls and Trail Blazers as well.
Giles, 25, last played in the NBA with Portland in 2020-21. He spent two years before that with the Kings.