Gallinari signed a multiyear extension, although terms were not released.
Gallinari averaged 12.4 points and 3.7 rebounds last season.
Richardson played for the Heat summer leauge team in Orlando and Las Vegas. He played in 10 games (six starts), averaging 11.8 points, 2.8 rebounds, 1.7 steals and 1.6 assists in 26.1 minutes per game.
Richardson was selected in the second round (40th overall) of the 2015 NBA Draft. He played four seasons at Tennessee (136 games), averaging 9.2 points, 3.2 rebounds, 1.8 assists, 1.1 steals and 28.2 minutes per game.
Anderson was selected 21st overall out of Virginia. He averaged 17.5 points 4.2 rebounds, 1.5 assists and 1.2 steals in Summer League.
Hamilton was signed to a 10-day contract in February and later signed for the rest of the season. He averaged 2.7 points, and 1.1 rebounds this year.
The Kings voided the one-year, $1.5 million contract the two sides agreed to after Mbah a Moute failed a physical over concerns with his right shoulder. Mbah a Moute has been cleared to participate in an NBA exhibition game in Africa on Saturday.
Douglas averaged 4.3 points and 2.0 assists per game in 12 games for New Orleans last season.
Mudiay was the seventh-overall pick in the 2015 NBA Draft.
Vujacic played in two games for the Clippers last season. In eight seasons, Vujacic has a career average of 5.6 points per game.
"We have been informed Jordan was arrested for allegedly reckless driving in Atlanta, Georgia," Pacers president Larry Bird said in a statement. "It is obvious we don't condone this. We will address this with Jordan. This is a major concern of safety, not just for Jordan, but for others."
Hill was arrested after allegedly driving 107 miles per hour. He recently signed a one-year, $5 million deal with the Pacers.
Thompson averaged 6.1 points and 6.5 rebounds in 81 games last season, while Wallace averaged 1.1 points and 1.8 rebounds in 32 games.