Minnesota Timberwolves' Kevin Garnett (21) shoots over New York Knicks' David Lee. Garnett has spent all of his 12 NBA seasons with Minnesota. ((Frank Franklin II/Associated Press))

The Boston Celtics made it official on Tuesday by announcingthey have acquired all-star forward Kevin Garnett in a trade with the Minnesota Timberwolves.

Going to the Timberwolves in the deal are Ryan Gomes, Gerald Green, Al Jefferson, Theo Ratliff, Sebastian Telfair and two first-round draft picks.

Minnesota also receives cash considerations as part of a trade,which was rumoured to be in the works on Monday.

A 10-time all-star and league MVP in 2004, Garnett, 31, had spent his entire 12-year NBA career with the Timberwolves, who selected him fifth overall out of high school in the 1995 draft.

"Kevin Garnett is a great player in our league, with a fierce and competitive spirit, who brings offensive scoring prowess and a defensive presence to our team," said Danny Ainge, the executive director of basketball operations for the Celtics.

Garnett joins fellow all-star Ray Allen, acquired from Seattle in a draft-day trade, and veteran Paul Pierce on a Boston team that missed the playoffs last year and hasn't won an NBA world title since 1986.

"I am excited to become a Celtic," Garnett said. "It's wonderful to have the opportunity to play with players the quality of Paul and Ray. The Celtics have had a proud tradition and now I hope that we can add to the legacy."

Garnett averaged 22.4 points and 12.8 rebounds for Minnesota last season and has averages of 20.4 points and 11.4 rebounds per game during his NBA career.

"While it's difficult to part ways with the young players we've worked hard to develop, Kevin has been the consummate professional player in the NBA and a player who I have marvelled at over the years," Celtics coach Doc Rivers said.

"Kevin leaves everything he has out on the floor every game. He has drive, passion and a hunger to win that is unmatched across the league."

Garnett is one of five players in NBA history to amass at least 19,000 points, 10,000 rebounds and 4,000 assists, joining Wilt Chamberlain, Kareem Abdul-Jabbar, Karl Malone and Charles Barkley.