"Former Knick Stephon Marbury signed on with the Boston Celtics, as expected, in hopes of winning a ring with the defending champs as a backup guard.

Marbury, who reached a buyout settlement with the Knicks earlier this week, signed for the veteran's exception, which, pro-rated, is somewhere around $400,000.

Marbury joined the Celtics for their Friday morning shootaround and is available to play Friday night against the Indiana Pacers. After his tumultuous career with the Knicks, his signing sparked league-wide debate.

"It could be a good move and you hope it doesn't blow up in their face," said Reggie Miller, an analyst for Turner Broadcasting. "Let's face it, every place he's played, he's been a disruption in the locker room. As we know, the Celtics have a very strong locker room because of the Big Three (Kevin Garnett, Paul Pierce and Ray Allen)."

Marbury has not played since January of 2008 when he had ankle surgery."