-- Former Celtics star Antoine Walker has gone through a lot over the last two years.

He was bound and robbed at gunpoint in 2007 by several robbers in his suburban Chicago residence.

He was sued this past summer for $822,500 to payback his Las Vegas gambling debts, arrested on suspicion of drunk driving at Miami Beach in January, and he has not played an NBA game since early 2008 when he was with the Minnesota Timberwolves.

But word out of Las Vegas of all places is that Walker, a former 3-time All-Star, is talking to four separate teams about the possibility of making a comeback.

Well, at least that is what he told Sports Illustrated writer Chris Mannix over the weekend.

"Just bumped into Antoine Walker at the MGM," Mannix wrote on his Twitter page. "Says he is talking to four teams and plans on being in a camp on a non-guaranteed deal next week."

On the court, Walker, 33, is known for his running and gunning. He never saw a shot that he didn't like. That style worked for him when he was in his 20's with Boston, but Walker has slowed dramatically since he and Paul Pierce nearly carried the Celtics to the NBA Finals during the 2001-02 season when Walker averaged 22.1 points and 8.8 rebounds per game.

In his last NBA season, Walker averaged 8.0 points, 3.7 rebounds, and 1.0 assists in 19.4 minutes in 46 games.