Brown is back playing for Collins and will be the starting center for the Sixers.
The well-traveled Brown was the No. 1 overall pick out of high school in the 2001 draft by the Washington Wizards. He never lived up this potential and has been called a bust.
Collins says he wishes he could go back and "be a better coach and a better mentor" to Brown.
He gets a second chance this season.
The Sixers acquired Brown, Dorell Wright, Nick Young, and Royal Ivey this summer. They also added draft-night pickups Maurice Harkless and Arnett Moultrie.
Collins says in order to accommodate Brown at center, Spencer Hawes will shift to power forward.