Brown played 19 minutes Sunday during Westchester's 107-95 win over the Swarm and tallied 10 points (4-10 FG, 1-1 FT), 13 rebounds and two steals.
The Pacers waived Brown on Monday, Michael Scotto of USA Today reports.
Brown totaled no counting stats over three minutes during Tuesday's 122-111 loss to Toronto.
The Pacers are signing Brown to an NBA contract Monday, Shams Charania of ESPN reports.
Brown was waived by the Knicks on Thursday.
Brown signed an Exhibit 10 contract with the Knicks on Wednesday.
Brown registered nine points (3-6 FG, 3-6 FT), four rebounds and one steal in 14 minutes during Thursday's 93-89 Summer League win over the Cavaliers.
Brown will start at center in Sunday's regular-season finale against the Kings.
The Trail Blazers have recalled Brown on Saturday from the G League's Rip City Remix.
Brown (wrist) tallied seven points (3-3 FG, 1-3 FT) and one rebound in nine minutes Friday in the Trail Blazers' 122-92 win over the Grizzlies.