Jackson, 25, is 6-foot-8 and was originally drafted by the Suns with the No. 4 overall pick in the 2017 NBA Draft.
He appeared in 51 total games last season — 39 with the Pistons and another 12 with the Kings — and compiled averages of 6.4 points and 2.8 rebounds. He has also spent time with the Grizzlies and Pistons.
Brown, 22, is 6-8 and went undrafted out of Michigan State after earning third-team All-Big Ten honors last season. He spent all four years with the Spartans.
He then played for the Thunder’s summer league team in Las Vegas, averaging 11.0 points and 3.5 rebounds in four games.
Wilson, 26, is 6-10 and is a former first-round pick, drafted by the Bucks at No. 17 overall in 2017. He spent the first three years of his career with Milwaukee, before landing with the Rockets.
He appeared in four games with the Raptors last season after signing three 10-day contracts. He then injured his knee in March and was released.