General manager Danny Ferry says the 6-foot-8 forward impressed the team by expanding his game. Terms of the deal were not released.
Scott, a second-round pick from Virginia in 2012, averaged 9.6 points last season, up from 4.6 as a rookie. He started six of his 80 games and also averaged 3.6 rebounds.
Scott made 62 of 200 3-point attempts last season after missing his only 3 as a rookie. His five second-quarter 3s in Game 5 of the first round of the playoffs against Indiana were the second-highest total in any period in NBA playoff history.